{"product_id":"lambro-industries-604b-fixed-air-intake-louver-vent-4-in","title":"Lambro Industries 604B Fixed Air Intake Louver Vent 4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe LAMBRO INDUSTRIES 604B is a fixed air intake louver vent designed for residential and light-commercial ventilation applications. Constructed from brown plastic, this vent provides a dedicated intake opening for fresh air while the integrated plastic screen filter blocks debris, insects, and other contaminants from entering the duct system. Rated for a 4-inch opening, it installs directly into a wall or soffit penetration and is a standard choice for HVAC technicians and installers managing balanced ventilation, combustion air makeup, or general building ventilation.\u003c\/p\u003e\u003cp\u003eThis vent is suited for applications where a fixed, non-adjustable intake louver is required. Its brown color blends with common exterior finishes, making it appropriate for visible installations on siding, eaves, or foundation walls. The plastic screen filter is built into the assembly, reducing the need for separate filtration components at the intake point. It is commonly used in residential new construction and retrofit projects where a low-profile intake solution is needed.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFixed louver design maintains consistent airflow without adjustment\u003c\/li\u003e\n\u003cli\u003eIntegrated plastic screen filter blocks debris and pests at the intake\u003c\/li\u003e\n\u003cli\u003e4-inch size fits standard duct penetrations and collar connections\u003c\/li\u003e\n\u003cli\u003eBrown plastic construction resists corrosion in exterior installations\u003c\/li\u003e\n\u003cli\u003eSold individually for flexible installation planning\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation component for 4-inch fixed air intake vent applications in residential and light-commercial ventilation systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by HVAC technicians or general contractors during rough-in or retrofit work. Shut down the associated air handling or ventilation equipment before cutting or modifying any duct penetration. Verify the wall or soffit opening is sized to accept a 4-inch vent collar and that the installation location meets local building code requirements for combustion air or fresh-air intake clearances. Secure the vent flange to the mounting surface using appropriate fasteners for the substrate material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Brown Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Type\u003c\/strong\u003e: Plastic Screen\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLouver Style\u003c\/strong\u003e: Fixed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.08 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 604B\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LAMBRO INDUSTRIES","offers":[{"title":"Default Title","offer_id":51525188649266,"sku":"604B","price":69.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/62e136438fe742ee704d1294513b5807.jpg?v=1785466688","url":"https:\/\/voomisupply.com\/products\/lambro-industries-604b-fixed-air-intake-louver-vent-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}