{"product_id":"imperial-mfg-group-usa-inc-gv1418-taper-increaser-3x4-24ga","title":"Imperial Mfg Group Usa Inc GV1418 Taper Increaser 3x4 24GA","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IMPERIAL MFG GROUP USA INC GV1418 is a 24-gauge galvanized steel taper increaser designed to transition round duct from a 3-inch diameter to a 4-inch diameter. The large end is crimped for easy slip-fit insertion into the next duct section without additional tools. This fitting is a standard component in residential and light-commercial forced-air HVAC systems wherever a duct run requires an incremental size step-up. HVAC sheet metal installers and ductwork fabricators typically specify this type of fitting to manage airflow transitions within supply or return trunk layouts. The 24-gauge galvanized construction provides corrosion resistance suitable for typical interior duct applications.\u003c\/p\u003e\n\u003cp\u003eThis taper increaser is used in round duct systems where a step-up transition is needed between a smaller and larger diameter duct section. Common install scenarios include branch-to-trunk connections, equipment outlet transitions, and inline duct expansions in residential forced-air systems. It ships in a package quantity of 10 units, making it practical for contractors stocking fittings for multi-unit jobs or service vehicles.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTransitions round duct from 3 inches to 4 inches in a single fitting\u003c\/li\u003e\n  \u003cli\u003e24-gauge galvanized steel construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eLarge end crimped for slip-fit assembly into adjacent duct sections\u003c\/li\u003e\n  \u003cli\u003ePackaged in quantities of 10 for contractor convenience\u003c\/li\u003e\n  \u003cli\u003eTaper increaser profile maintains smooth airflow through the transition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style duct fitting compatible with standard 3-inch and 4-inch round galvanized duct systems used in residential and light-commercial forced-air HVAC installations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a licensed HVAC technician or sheet metal installer. Power down the air handling unit and verify the system is de-energized before working on duct sections. The crimped large end is designed to insert into the female end of the next fitting or duct collar; secure with sheet metal screws and seal all joints with UL 181-listed duct tape or mastic per applicable mechanical code requirements. Do not force the fitting into undersized collars, as deforming the gauge material will compromise the seal.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmall End Diameter\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge End Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGauge\u003c\/strong\u003e: 24 GA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge End\u003c\/strong\u003e: Crimped\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.47 pounds (per package of 10)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\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: IMPERIAL MFG GROUP USA INC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: GV1418\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPERIAL","offers":[{"title":"Default Title","offer_id":51561795977522,"sku":"GV1418","price":118.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e518d28499a18bdcaaf5395cc29666f0_a8209a94-113b-486e-be3e-13f9d5c2cc41.jpg?v=1786468887","url":"https:\/\/voomisupply.com\/products\/imperial-mfg-group-usa-inc-gv1418-taper-increaser-3x4-24ga","provider":"Voomi Supply","version":"1.0","type":"link"}