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Therwen 1 Pcs 6" Duct Air Inline Filter Box with Epdm Gaskets, Filter Pad — Open-Box, 11% Off
Brand: Therwen
Condition: Used - Good
$6496
$7299
-11% Save $803
Updated: 5 days ago
Description
Ready to Apply: this 6 inch duct filter comes with 1 w-shaped pleated replacement filter pad, allowing you to apply it right out of the box; It is compatible with 5.91 inch round ducts and designed for inline installation in ventilation systems, box fans, or HVAC ductwork, no extra filter purchase required
Durable Sturdy Construction: the duct air filter box is made of corrosion resistant galvanized steel with a secure snap fastener seal on the top; Unlike plastic alternatives, the all-metal structure withstands moisture, high temperatures, and mechanical stress, making it good for laundry rooms, kitchens, workshops, and grow tents
Effective Tight Sealing: each inline duct filter is equipped with an epdm rubber gasket that creates a tight, airtight seal with round ducts; Air passes through the filter rather than bypassing it, ensuring every cubic foot of air is purified with no unfiltered air leakage
Tool Free Installation and Replacement: featuring a top snap fastener design, the box fan filter can be easily opened without tools or disassembly for quick filter replacement; The replacement filter installs directly, allowing you to maintain clean air effortlessly
Wide Application and Good Fit: galvanized steel filter box is good for box fan intake filtration, duct air purification, dryer lint trapping, bathroom exhaust systems, grow room intakes, spray booths, and woodworking shops; Filter dimensions: 8.27" x 8.27" x 5.91", suitable for standard 6 inch round duct connections
Features: Ready to Apply: This 6 inch duct filter comes with 1 w-shaped pleated replacement filter pad, allowing you to apply it right out of the box. It is compatible with 5.91 inch round ducts and designed for inline installation in ventilation systems, box fans, or HVAC ductwork, no extra filter purchase required. Durable Sturdy Construction: The duct air filter box is made of corrosion resistant galvanized steel with a secure snap fastener seal on the top. Unlike plastic alternatives, the all-metal structure withstands moisture, high temperatures, and mechanical stress, making it good for laundry rooms, kitchens, workshops, and grow tents. Specifications: Material: galvanized steel Color: silver Size: about 8.27 x 8.27 x 5.91 inch / 21.01 x 21.01 x 15.01 cm Package includes: 1 x Duct air filter box Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.
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Amazon Warehouse
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- 30-day return policy
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Product Details
- SKU:
- awhd-us-b0gzp1d9yc
- Model:
- GFA-Therwen-3041
- Country:
- US
- ASIN:
- B0GZP1D9YC
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $8 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Therwen products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.
