{"product_id":"lambro-industries-1422w-single-flap-louver-vent-4-inches","title":"Lambro Industries 1422W Single Flap Louver Vent 4 Inches","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LAMBRO INDUSTRIES 1422W is a 4-inch single flap louver vent constructed from white plastic. It is designed to terminate dryer exhaust ducts, bathroom exhaust fans, or similar 4-inch round duct systems at an exterior wall. The single flap opens under positive airflow and closes by gravity when the system is off, limiting backdraft and pest entry. HVAC technicians, plumbers, and general contractors typically install this fitting as part of residential ventilation rough-in or replacement service.\u003c\/p\u003e\n\u003cp\u003eThis louver vent suits residential applications where a 4-inch round duct penetrates an exterior wall or soffit. Common installations include dryer vent terminations, bath fan exhaust terminations, and kitchen exhaust outlets. The white finish blends with standard trim and siding. It is sold in cases of 16 units, making it a practical stocking item for contractors managing multiple jobs or service calls that routinely require vent termination hardware.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle gravity-close flap reduces backdraft when the exhaust system is idle\u003c\/li\u003e\n  \u003cli\u003e4-inch opening matches standard residential exhaust duct sizing\u003c\/li\u003e\n  \u003cli\u003eWhite plastic construction resists moisture and corrosion at exterior termination points\u003c\/li\u003e\n  \u003cli\u003eLightweight design simplifies handling and positioning during wall penetration installs\u003c\/li\u003e\n  \u003cli\u003ePackaged in quantities of 16 units per case for contractor convenience\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation louver vent for residential 4-inch round exhaust duct terminations, including dryer and bath fan applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by HVAC technicians or general contractors following local mechanical code requirements. Power down or unplug the connected exhaust appliance before cutting the wall penetration or disconnecting existing ductwork. Seal the flange perimeter with appropriate exterior caulk to prevent water intrusion. Verify that the duct run length and number of elbows comply with the appliance manufacturer guidelines and applicable mechanical codes before completing the termination.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDuct Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlap Style\u003c\/strong\u003e: Single flap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.36 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 16 units per case\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: LAMBRO INDUSTRIES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1422W\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LAMBRO INDUSTRIES","offers":[{"title":"Default Title","offer_id":51524389273906,"sku":"1422W","price":79.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f5c85f70f896720f812a7b3110a71a31.jpg?v=1785447687","url":"https:\/\/voomisupply.com\/products\/lambro-industries-1422w-single-flap-louver-vent-4-inches","provider":"Voomi Supply","version":"1.0","type":"link"}