{"product_id":"langschlitz-walze-duo","title":"MASC Long-slot roller Duo for beading machines, sizes 20\/25 and 26\/32","description":"\u003cp\u003e✔ \u003cstrong\u003eDouble punching pass in one step\u003c\/strong\u003e – Creates double-row ventilation slots for 50% time savings during production\u003cbr\u003e✔ \u003cstrong\u003ePrecision in accordance with DIN standards\u003c\/strong\u003e – MASC Duo long-slot rollers manufactured to German industrial standards for precise ventilation openings\u003cbr\u003e✔ \u003cstrong\u003eUniversally compatible\u003c\/strong\u003e – Fits almost all standard hand-operated or motorized bead forming machines\u003cbr\u003e✔ \u003cstrong\u003eTwo Duo sizes (20\/25 \u0026amp; 26\/32)\u003c\/strong\u003e – Adapted to common roller mounts and shaft lengths\u003cbr\u003e✔ \u003cstrong\u003eSelf-feeding mechanism\u003c\/strong\u003e – Automatic sheet advancement when the crank is operated for clean rows of slots\u003c\/p\u003e\n\u003ch2\u003eDouble-row ventilation and water drainage slots at the push of a button\u003c\/h2\u003e\n\u003cp\u003eThe MASC Duo long-slot roller is a roller attachment for bead forming machines that allows sheet metal workers, plumbers, and roofers to punch two parallel ventilation and drainage slots in a single operation rather than just one row per pass. The design complies with German industrial standards (DIN) and is available for hand-operated and motorized bead forming machines in sizes 20\/25 and 26\/32, suitable for items such as gravel stop trims, chimney ventilation, and large-scale ventilation sheets.\u003c\/p\u003e\n\u003ch2\u003eKey features \u0026amp; specifications\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOperating principle:\u003c\/strong\u003e Punches two parallel rows of slots in one operation instead of a single row per pass\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eStandard:\u003c\/strong\u003e Designed according to German industrial standards (DIN) for dimensionally accurate ventilation openings\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDrive:\u003c\/strong\u003e Suitable for hand-operated and motorized bead forming machines\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAvailable sizes:\u003c\/strong\u003e Roller mount\/shaft length 20\/25 mm and 26\/32 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFeed:\u003c\/strong\u003e Automatic sheet feed when the crank is operated\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMaximum sheet thickness aluminum:\u003c\/strong\u003e 1.0 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMaximum sheet thickness copper \u0026amp; zinc:\u003c\/strong\u003e 0.8 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMaximum sheet thickness sheet steel:\u003c\/strong\u003e 0.6 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMaximum sheet thickness stainless steel (V2A):\u003c\/strong\u003e 0.5 mm\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSpecial versions:\u003c\/strong\u003e Available for older MASC machines upon request via MASC measurement data sheet\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2\u003eRecommended areas of application\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003eSerial production of double-row ventilation and water drainage slots for gravel stop trims in balcony and flat roof areas\u003c\/li\u003e\n\n\u003cli\u003eProduction of ventilation openings on chimney flashings\u003c\/li\u003e\n\n\u003cli\u003ePerforation of large-scale ventilation sheets for roofs and facades\u003c\/li\u003e\n\n\u003cli\u003eWorkshop production where double-passing the sheet metal strip should be avoided\u003c\/li\u003e\n\n\u003cli\u003eRetrofitting existing hand-operated or motorized bead forming machines with a Duo-punching function\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"open\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhich roller attachment is best suited for punching ventilation slots in gravel stop trims?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe MASC Duo long-slot roller punches two parallel ventilation and drainage slots in one operation, making it specifically suitable for serial production of gravel stop trims in balcony and flat roof areas. It is designed to DIN standards, which ensures dimensionally accurate openings.\u003c\/p\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"open\"\u003e\n\u003csummary\u003e\u003cstrong\u003eI want to punch two parallel drainage slots in one pass; which tool is recommended for this?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe MASC Duo long-slot roller is designed exactly for this purpose: Instead of a single row per pass, it punches two parallel rows of slots simultaneously, eliminating the need to pass the sheet metal strip through twice. The sheet feed occurs automatically when the crank is operated.\u003c\/p\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"open\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan it also be used to efficiently produce chimney ventilation?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes, the production of ventilation openings on chimney flashings is one of the intended applications for the MASC Duo long-slot roller. Since both rows of slots are created in one operation, this saves time compared to two separate passes.\u003c\/p\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"open\"\u003e\n\u003csummary\u003e\u003cstrong\u003eFor which bead forming machines and material thicknesses is the roller suitable?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe attachment is available for hand-operated and motorized bead forming machines in sizes 20\/25 and 26\/32. It can process aluminum up to 1.0 mm, copper and zinc up to 0.8 mm, sheet steel up to 0.6 mm, and stainless steel (V2A) up to 0.5 mm.\u003c\/p\u003e\n\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"open\"\u003e\n\u003csummary\u003e\u003cstrong\u003eIs the tool also suitable for the perforation of large-scale ventilation sheets according to DIN standards?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes, the perforation of large-scale ventilation sheets for roofs and facades is among its intended applications. The design in accordance with German industrial standards (DIN) ensures dimensionally accurate ventilation openings.\u003c\/p\u003e\n\n\u003c\/details\u003e\n\u003ch2\u003eWhy the MASC Duo long-slot roller belongs in your workshop\u003c\/h2\u003e\n\u003cp\u003eThe decisive advantage of this Duo roller lies in the \u003cstrong\u003edrastic time savings combined with consistently high precision\u003c\/strong\u003e. You produce professional, clean ventilation rows in half the time – an unbeatable added value for all flat roof and sheet metal projects.\u003c\/p\u003e\n\u003cp\u003eIncrease the output of your bead forming machine. Order the \u003cstrong\u003eMASC Duo long-slot roller (size 20\/25 or 26\/32)\u003c\/strong\u003e now in the \u003cstrong\u003eroofer shop\u003c\/strong\u003e from your roof specialist \u003cstrong\u003eRoofify\u003c\/strong\u003e!\u003c\/p\u003e","brand":"MASC","offers":[{"title":"20\/25","offer_id":54126591312219,"sku":"LSWD20\/25","price":284.99,"currency_code":"EUR","in_stock":true},{"title":"26\/32","offer_id":54126591344987,"sku":"LSWD26\/32","price":284.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/3787\/5547\/files\/LSWD20_Duo_Produktverschoenerer_8dcac8f4-46a6-40a1-b39f-97044868570b.webp?v=1789923259","url":"https:\/\/roofify.shop\/en\/products\/long-slot-roller-duo","provider":"Roofify | Dachhandwerk \u0026 Profi-Werkzeuge","version":"1.0","type":"link"}