{"id":27,"date":"2026-08-13T06:51:16","date_gmt":"2026-08-13T06:51:16","guid":{"rendered":"https:\/\/spiralduct.com.au\/wpsda\/?page_id=27"},"modified":"2026-08-15T10:45:14","modified_gmt":"2026-08-15T00:45:14","slug":"round-duct","status":"publish","type":"page","link":"https:\/\/spiralduct.com.au\/?page_id=27","title":{"rendered":"ROUND DUCT"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Our spiral duct is available in round and oval form which complies to AS4254-1995.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Round duct diameter ranges from 76mm to 1524mm with wall thickness between 0.6mm to 1.6mm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Please refer to the Round Data Table below for available sizes.<\/p>\n\n\n\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns27_4bace3-ac\"><a class=\"kb-button kt-button button kb-btn27_50da88-b5 kt-btn-size-standard kt-btn-width-type-full kb-btn-global-inherit kt-btn-has-text-true kt-btn-has-svg-true wp-block-button__link wp-block-kadence-singlebtn\" href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/SpiralDuctAustraliaRoundDataTable.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"kb-svg-icon-wrap kb-svg-icon-fas_file-pdf kt-btn-icon-side-left\"><svg viewBox=\"0 0 384 512\"  fill=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><path d=\"M181.9 256.1c-5-16-4.9-46.9-2-46.9 8.4 0 7.6 36.9 2 46.9zm-1.7 47.2c-7.7 20.2-17.3 43.3-28.4 62.7 18.3-7 39-17.2 62.9-21.9-12.7-9.6-24.9-23.4-34.5-40.8zM86.1 428.1c0 .8 13.2-5.4 34.9-40.2-6.7 6.3-29.1 24.5-34.9 40.2zM248 160h136v328c0 13.3-10.7 24-24 24H24c-13.3 0-24-10.7-24-24V24C0 10.7 10.7 0 24 0h200v136c0 13.2 10.8 24 24 24zm-8 171.8c-20-12.2-33.3-29-42.7-53.8 4.5-18.5 11.6-46.6 6.2-64.2-4.7-29.4-42.4-26.5-47.8-6.8-5 18.3-.4 44.1 8.1 77-11.6 27.6-28.7 64.6-40.8 85.8-.1 0-.1.1-.2.1-27.1 13.9-73.6 44.5-54.5 68 5.6 6.9 16 10 21.5 10 17.9 0 35.7-18 61.1-61.8 25.8-8.5 54.1-19.1 79-23.2 21.7 11.8 47.1 19.5 64 19.5 29.2 0 31.2-32 19.7-43.4-13.9-13.6-54.3-9.7-73.6-7.2zM377 105L279 7c-4.5-4.5-10.6-7-17-7h-6v128h128v-6.1c0-6.3-2.5-12.4-7-16.9zm-74.1 255.3c4.1-2.7-2.5-11.9-42.8-9 37.1 15.8 42.8 9 42.8 9z\"\/><\/svg><\/span><span class=\"kt-btn-inner-text\">Spiral Duct Round Data Table &#8211; diameters and gauges 507KB<\/span><\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h5 class=\"wp-block-heading\">MATERIAL<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Galvanised steel (1.6mm gauge available on request)<\/li>\n\n\n\n<li>Mild Steel<\/li>\n\n\n\n<li>Aluminium<\/li>\n\n\n\n<li>Aluminized Steel<\/li>\n\n\n\n<li>Stainless Steel T304<\/li>\n\n\n\n<li>Stainless Steel T316<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">APPLICATIONS<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Air conditioning available as plain, thermally insulated and acoustically insulated<\/li>\n\n\n\n<li>Mechanical ventilation<\/li>\n\n\n\n<li>Tunnel ventilation<\/li>\n\n\n\n<li>Dust and Fume extractions<\/li>\n\n\n\n<li>Flues and Stacks<\/li>\n\n\n\n<li>Concrete Formwork including voids and pier lines<\/li>\n\n\n\n<li>Security cowling<\/li>\n\n\n\n<li>Rubbish chutes<\/li>\n\n\n\n<li>Radiant heat tubes<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">ROUND DUCT GALLERY<\/h5>\n\n\n<div class=\"kb-gallery-wrap-id-27_fbda88-d3 alignnone wp-block-kadence-advancedgallery\"><div class=\"kb-gallery-ul kb-gallery-non-static kb-gallery-type-fluidcarousel kb-gallery-id-27_fbda88-d3 kb-gallery-caption-style-bottom-hover kb-gallery-filter-none kb-gallery-magnific-init\" data-image-filter=\"none\" data-lightbox-caption=\"false\"><div class=\"kt-blocks-carousel splide kt-carousel-container-dotstyle-dark kt-carousel-arrowstyle-whiteondark kt-carousel-dotstyle-dark kb-slider-group-arrow kb-slider-arrow-position-center\" data-slider-anim-speed=\"400\" data-slider-scroll=\"1\" data-slider-arrows=\"true\" data-slider-dots=\"true\" data-slider-hover-pause=\"false\" data-slider-auto=\"\" data-slider-speed=\"7000\" data-slider-type=\"fluidcarousel\" data-slider-center-mode=\"true\" data-slider-gap=\"10px\" data-slider-gap-tablet=\"10px\" data-slider-gap-mobile=\"10px\" data-show-pause-button=\"false\"><div class=\"splide__track\"><ul class=\"kt-blocks-carousel-init kb-blocks-fluid-carousel splide__list\"><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round1.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round1.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round1.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round1.jpg\" data-id=\"134\" class=\"wp-image-134 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round1.jpg 640w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round1-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round2.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round2.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round2.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round2.jpg\" data-id=\"140\" class=\"wp-image-140 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round2.jpg 640w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round2-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3.jpg\" data-id=\"135\" class=\"wp-image-135 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round3-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4.jpg\" data-id=\"138\" class=\"wp-image-138 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round4-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5.jpg\" data-id=\"136\" class=\"wp-image-136 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round5-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6.jpg\" data-id=\"137\" class=\"wp-image-137 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round6-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8.jpg\" data-id=\"139\" class=\"wp-image-139 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round8-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10.jpg\" data-id=\"143\" class=\"wp-image-143 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round10-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9.jpg\" data-id=\"142\" class=\"wp-image-142 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round9-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11.jpg\" data-id=\"141\" class=\"wp-image-141 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round11-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12.jpg\" data-id=\"144\" class=\"wp-image-144 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round12-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13.jpg\" data-id=\"146\" class=\"wp-image-146 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round13-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round14.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"1000\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round14.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round14.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round14.jpg\" data-id=\"145\" class=\"wp-image-145 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round14.jpg 750w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round14-225x300.jpg 225w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><li class=\"kb-slide-item kb-gallery-carousel-item splide__slide\"><div class=\"kadence-blocks-gallery-item\"><div class=\"kadence-blocks-gallery-item-inner\"><figure class=\"kb-gallery-figure kb-gallery-item-has-link kadence-blocks-gallery-item-hide-caption\"><a href=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15.jpg\" class=\"kb-gallery-item-link\"   role=\"button\" aria-haspopup=\"dialog\"><div class=\"kb-gal-image-radius\"><div class=\"kb-gallery-image-contain\" ><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15.jpg\"   alt=\"\" data-full-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15.jpg\" data-light-image=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15.jpg\" data-id=\"147\" class=\"wp-image-147 skip-lazy\" srcset=\"https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15.jpg 1000w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15-300x225.jpg 300w, https:\/\/spiralduct.com.au\/wpsda\/wp-content\/uploads\/2026\/08\/Round15-768x576.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/a><\/figure><\/div><\/div><\/li><\/ul><\/div><\/div><\/div><\/div>\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap kb-btns27_9bd750-e3\"><a class=\"kb-button kt-button button kb-btn27_bafb75-35 kt-btn-size-standard kt-btn-width-type-fixed kb-btn-global-inherit kt-btn-has-text-true kt-btn-has-svg-true wp-block-button__link wp-block-kadence-singlebtn\" href=\"https:\/\/spiralduct.com.au\/wpsda\/?page_id=29\"><span class=\"kt-btn-inner-text\">Find out more about Spiral Duct Round Fittings <\/span><span class=\"kb-svg-icon-wrap kb-svg-icon-fe_arrowRightCircle kt-btn-icon-side-right\"><svg viewBox=\"0 0 24 24\"  fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"  aria-hidden=\"true\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><polyline points=\"12 16 16 12 12 8\"\/><line x1=\"8\" y1=\"12\" x2=\"16\" y2=\"12\"\/><\/svg><\/span><\/a><\/div>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our spiral duct is available in round and oval form which complies to AS4254-1995. Round duct diameter ranges from 76mm to 1524mm with wall thickness between 0.6mm to 1.6mm. Please refer to the Round Data Table below for available sizes. MATERIAL APPLICATIONS ROUND DUCT GALLERY<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/template-page-full-width.php","meta":{"footnotes":""},"class_list":["post-27","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=\/wp\/v2\/pages\/27","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27"}],"version-history":[{"count":14,"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=\/wp\/v2\/pages\/27\/revisions"}],"predecessor-version":[{"id":696,"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=\/wp\/v2\/pages\/27\/revisions\/696"}],"wp:attachment":[{"href":"https:\/\/spiralduct.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}