4 Inch Inline Filter Box With High Efficiency Filter For Whole House HVAC Filtration Kit That Blocks Dust And Odors Fits 4 Inch Inline Duct Fans For Fresh Air Intake And Ventilation Heavy Duty Steel Build
✔️ 400 CFM max, fits 4-inch inline fans, steel shell, single unit
This 4 inch inline filter box is designed for use with inline fans to circulate fresh air while blocking dust and odors. It is built from heavy-duty 1 mm cold-rolled steel with aluminum duct flanges to weather tough environments. A slide-lock door provides quick access to the inner chamber, and a soft neoprene layer creates a dust-free seal. Dimensions: 23.46 x 8.42 x 11.73 inches (596 x 214 x 298 mm). Includes a standard high-efficiency filter capable of trapping dust, dirt, lint, and odors. Fits 12 x 20 x 1 inch filters and supports up to 400 CFM.
✅ 4-inch inline duct box design for inline fans
✅ Heavy-duty steel body with 1 mm thickness
✅ Slide-lock door with neoprene seal for dust-free chamber
✅ Includes high-efficiency filter to trap dust, dirt, lint, and odors
✅ Dimensions: 23.46 x 8.42 x 11.73 inches (596 x 214 x 298 mm)
💡 What is an inline filter box used for in residential HVAC systems?
Inline filter boxes are handy devices placed in ductwork to clean incoming air, block dust and odors, and protect fans and ducts in a home or small commercial setup.
- Handy for improving indoor air quality in HVAC systems - Protects inline fans and ducts from dust and odors - Compatible with standard 12 x 20 x 1 inch filters - Rugged steel construction for weather-ready use✝️