{"product_id":"perforated-galvanised-steel-r8-t11","title":"Perforated Galvanised Steel Sheet - R8\/T11 (8.0mm Holes \/ 11.0mm Pitch)","description":"\u003cp\u003eGalvanised perforated steel sheet with R8\/T11 hole pattern - 8.0mm round holes at 11.0mm pitch (staggered 60° triangular pattern). Zinc-coated mild steel for long-term outdoor corrosion resistance, supplied in standard UK sheet sizes (2 x 1m, 2.5 x 1.25m) and thicknesses (1mm, 1.5mm). Suitable for outdoor ventilation, agricultural use, animal enclosures, garden screens, livestock panels, exterior cladding and any application where rust resistance matters.\u003c\/p\u003e\u003ch2\u003eR8\/T11 Pattern Specification\u003c\/h2\u003e\u003cp\u003eHole diameter: \u003cstrong\u003e8.0mm\u003c\/strong\u003e round, staggered pattern.\u003cbr\u003ePitch: \u003cstrong\u003e11.0mm\u003c\/strong\u003e centre-to-centre spacing.\u003cbr\u003eMaterial: Pre-galvanised or hot-dip galvanised mild steel.\u003cbr\u003eCoating standard: BS EN 10346 (pre-galvanised) or BS EN ISO 1461 (hot-dip galvanised).\u003c\/p\u003e\u003ch2\u003eAvailable Sizes \u0026amp; Pricing\u003c\/h2\u003e\u003cp\u003eAll prices include VAT.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSheet Size\u003c\/th\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003cth\u003ePrice (inc VAT)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 x 1m\u003c\/td\u003e\n\u003ctd\u003e1mm\u003c\/td\u003e\n\u003ctd\u003e£99.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5 x 1.25m\u003c\/td\u003e\n\u003ctd\u003e1.5mm\u003c\/td\u003e\n\u003ctd\u003e£193.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOutdoor \u0026amp; Corrosion-Resistant Applications\u003c\/h2\u003e\u003cp\u003eGalvanised perforated sheet is the standard choice for outdoor and damp-environment use: agricultural buildings, livestock pens, animal enclosures, garden screens, exterior ventilation grilles, marine-adjacent applications, drying racks, water-handling sieves, fence infill panels, exterior architectural cladding, and any space where mild steel would corrode. The 8.0mm hole size provides good visibility and air-flow for ventilation and screening applications.\u003c\/p\u003e\u003ch2\u003eBulk \u0026amp; Trade Orders\u003c\/h2\u003e\u003cp\u003eFor bulk and trade orders (5+ sheets or multi-pattern orders), contact us for a project quote - trade pricing is available for larger quantities. Sheets are supplied in the standard sizes shown above.\u003c\/p\u003e\u003ch2\u003eDelivery Information\u003c\/h2\u003e\u003cp\u003eLead times are currently 3-5 working days for galvanised perforated sheets. Sheets are heavy and bulky - delivered on a pallet to mainland UK addresses. Suitable site access and someone available to assist with offloading are required.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat does R8\/T11 mean on a perforated sheet?\u003c\/strong\u003e\u003cbr\u003eR8\/T11 is the industry-standard pattern code: 'R' is the hole diameter and 'T' is the pitch (centre-to-centre spacing). So R8\/T11 means 8.0mm round holes spaced at 11.0mm pitch on a staggered (60-degree triangular) pattern. This is the most common UK perforated sheet specification convention.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose galvanised over mild steel perforated sheet?\u003c\/strong\u003e\u003cbr\u003eGalvanised perforated sheet has a zinc coating applied before or after perforation, giving long-term corrosion resistance for outdoor and damp applications. Mild steel will rust in outdoor or unheated environments unless painted; galvanised steel will not. Choose galvanised for: outdoor screens, agricultural buildings, livestock pens, outdoor ventilation, marine-adjacent applications, animal enclosures, exterior architectural panels, and any application where the sheet will see moisture, weather or unheated conditions. Mild steel is fine for dry, indoor or paint-finished applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is galvanised perforated sheet used for?\u003c\/strong\u003e\u003cbr\u003eCommon applications include outdoor ventilation grilles, agricultural screens, livestock and animal enclosure panels, drying racks, sieves and filters for wet processes, exterior cladding panels, garden screens, fencing infill panels, water-strainer mesh, balcony screens, machine guards in damp workshops, and any outdoor or unheated location where rust resistance matters. The zinc coating provides 10-25+ years of outdoor service depending on environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the delivery lead time?\u003c\/strong\u003e\u003cbr\u003eLead times are currently 3-5 working days for galvanised perforated sheets. Sheets are heavy and bulky items - delivered on a pallet to mainland UK addresses. Suitable site access and somebody available to assist with offloading are required.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does R8\/T11 mean on a perforated sheet?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"R8\/T11 is the industry-standard pattern code: 'R' is the hole diameter and 'T' is the pitch (centre-to-centre spacing). So R8\/T11 means 8.0mm round holes spaced at 11.0mm pitch on a staggered (60-degree triangular) pattern. This is the most common UK perforated sheet specification convention.\"}}, {\"@type\": \"Question\", \"name\": \"Why choose galvanised over mild steel perforated sheet?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Galvanised perforated sheet has a zinc coating applied before or after perforation, giving long-term corrosion resistance for outdoor and damp applications. Mild steel will rust in outdoor or unheated environments unless painted; galvanised steel will not. Choose galvanised for: outdoor screens, agricultural buildings, livestock pens, outdoor ventilation, marine-adjacent applications, animal enclosures, exterior architectural panels, and any application where the sheet will see moisture, weather or unheated conditions. 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Suitable site access and somebody available to assist with offloading are required.\"}}]}\u003c\/script\u003e","brand":"Rackerman","offers":[{"title":"2 x 1m \/ 1mm","offer_id":58158589804931,"sku":"PGS-0302R8T111","price":99.99,"currency_code":"GBP","in_stock":true},{"title":"2.5 x 1.25m \/ 1.5mm","offer_id":58158589837699,"sku":"PGS-030284R8T1115","price":193.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/0302R8T111x1000_56e4b811-4966-4d07-bbbc-927fc845675b.jpg?v=1780200698","url":"https:\/\/rackerman.co.uk\/products\/perforated-galvanised-steel-r8-t11","provider":"Rackerman","version":"1.0","type":"link"}