{"product_id":"mm-manufacturing-601-8x4x5-register-box-snap-rail-flange","title":"Mm Manufacturing 601-8X4X5 Register Box Snap-rail Flange","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MM MANUFACTURING 601-8X4X5 is a 601 series register box with snap-rail flange, designed for connecting round duct to a wall or floor register opening in residential and light commercial HVAC distribution systems. The box measures 8 inches by 4 inches by 5 inches at the register opening and accepts round duct connections ranging from 4 inches through 9 inches in diameter depending on the size selected. The snap-rail flange provides a secure, tool-friendly method of attaching standard registers or grilles. HVAC installers and sheet metal contractors use this box as a standard transition fitting in forced-air duct systems.\u003c\/p\u003e\n\u003cp\u003eThe 601-8X4X5 is suited for new construction and retrofit duct installations where a round-to-rectangular transition is needed at the register location. It fits within the 601 series product family, which is available in nine standard sizes to accommodate a range of duct diameters from 4 inches through 9 inches. Typical applications include floor, wall, and ceiling register rough-in work in residential forced-air systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSnap-rail flange allows fast, secure register or grille attachment without separate fasteners\u003c\/li\u003e\n  \u003cli\u003eRegister opening sized at 8 inches x 4 inches x 5 inches for standard register fitment\u003c\/li\u003e\n  \u003cli\u003eCompatible with round duct connections from 4 inches through 9 inches in diameter\u003c\/li\u003e\n  \u003cli\u003ePart of the 601 series, available in 9 standard sizes for flexible duct layout planning\u003c\/li\u003e\n  \u003cli\u003eLightweight construction at 0.75 pounds for easy single-tech handling during install\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and new-construction fitting for residential and light commercial forced-air duct systems requiring a round-duct-to-register-opening transition at wall, floor, or ceiling register locations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed HVAC technicians or sheet metal contractors. Power down the air handler and close the supply air damper before working in the duct system. Secure the round duct to the collar using approved duct tape or mechanical fasteners per local mechanical code requirements. Verify register or grille dimensions match the 8 inches x 4 inches x 5 inches opening before finalizing the rough-in.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRegister Opening Size\u003c\/strong\u003e: 8 inches x 4 inches x 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRound Duct Compatibility Range\u003c\/strong\u003e: 4 inches to 9 inches diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 10.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Height\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.75 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MM MANUFACTURING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 601-8X4X5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"M\u0026M MANUFACTURING","offers":[{"title":"Default Title","offer_id":51268897243442,"sku":"601-8X4X5","price":21.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/308913379.webp?v=1780709023","url":"https:\/\/voomisupply.com\/products\/mm-manufacturing-601-8x4x5-register-box-snap-rail-flange","provider":"Voomi Supply","version":"1.0","type":"link"}