{"product_id":"builders-best-111381a-wide-mouth-vent-hood-bird-guard-4x11","title":"Builders Best 111381a Wide Mouth Vent Hood Bird Guard 4x11","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BUILDERS BEST 111381a is a plastic wide mouth vent hood with an integrated bird guard, designed for exterior wall terminations on residential ventilation systems. The hood ships fully assembled at 11 inches overall length and fits a 4-inch duct opening. It includes an aluminum trim plate, a riveted tailpipe, and a back-draft flapper to prevent reverse airflow when the system is off. A 0.5-inch by 0.5-inch pest grid provides protection against birds and small rodents. HVAC technicians and general contractors install this hood as the exterior termination point for bathroom exhaust, kitchen exhaust, or fresh-air intake duct runs.\u003c\/p\u003e\u003cp\u003eThis vent hood is suited for residential applications where a 4-inch round duct penetrates an exterior wall. The wide mouth profile allows for adequate airflow volume at the termination point. The white finish blends with standard exterior trim and siding. Note: this hood is not recommended for dryer exhaust venting. If used in a dryer application, the pest grid must be inspected frequently for lint accumulation, which can create a fire hazard.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFully assembled at 11 inches overall length — no field assembly required\u003c\/li\u003e\n\u003cli\u003eBack-draft flapper prevents reverse airflow and air infiltration when system is idle\u003c\/li\u003e\n\u003cli\u003eRiveted tailpipe construction for secure duct connection\u003c\/li\u003e\n\u003cli\u003eAluminum trim plate covers wall penetration at exterior surface\u003c\/li\u003e\n\u003cli\u003e0.5-inch by 0.5-inch pest grid snaps in and is removable for cleaning\u003c\/li\u003e\n\u003cli\u003eWhite plastic finish suitable for exterior residential applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation vent hood for residential 4-inch exhaust and ventilation duct terminations through exterior walls.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by an HVAC technician or general contractor. Power down or turn off the fan unit at the circuit breaker before connecting ductwork to the tailpipe. Seal the trim plate to the exterior wall surface with an appropriate exterior-grade caulk to prevent water infiltration. The pest grid is removable for periodic cleaning and should be inspected regularly to ensure it is free of debris or lint accumulation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Assembled Length\u003c\/strong\u003e: 11 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePest Grid Opening Size\u003c\/strong\u003e: 0.5 inches x 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrim Plate Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHood Material\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\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: BUILDERS BEST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 111381a\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BUILDERS BEST","offers":[{"title":"Default Title","offer_id":51383359537458,"sku":"111381A","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312674158.webp?v=1782594454","url":"https:\/\/voomisupply.com\/products\/builders-best-111381a-wide-mouth-vent-hood-bird-guard-4x11","provider":"Voomi Supply","version":"1.0","type":"link"}