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WATTRIP 2-Pack 21x21x1 MERV 8 Reusable HVAC Electrostatic Furnace Filters — Open-Box, 18% Off
Brand: WATTRIP
Condition: Used - VeryGood
$8556
$10449
-18% Save $1893
Updated: 50 days ago
Description
Durable & Long-Lasting Construction: The 21x21x1 air filter is built to last with a reinforced aluminum frame and a sturdy design that resists deformation, ensuring reliable performance and long service life
Upgraded Painted Metal Mesh: This reusable and washable furnace air filter features an upgraded painted steel mesh for added strength and corrosion resistance, providing better support and improved filtration stability
7-Layer High-Efficiency Filtration: The HVAC filter comes with a 4-layer metal mesh, 2 layers of nylon media, and an additional filter cotton layer - effectively capturing dust, lint, pet hair, and other airborne particles to improve indoor air quality
Washable & Reusable Design: The electrostatic air filter is easy to clean. Simply rinse or vacuum to restore performance, reducing waste and saving you money on replacements. It is recommended to wash the filter every 13 months, and be sure to let it dry completely before reinstalling
Universal Compatibility: The 21 x 21 x 1 AC filter fits most standard HVAC, furnace, and air conditioner systems. It is designed for versatile use in both residential and commercial environments. Actual size: 20 5/8" (20.63") 20 5/8" (20.63") 7/8" (0.88")
MERV 8 Rating Performance: Achieves up to 94% dust capture efficiency with low 0.12" WG air resistance rating at 300 FPM flow, ensuring effective filtration without compromising your system's airflow and energy efficiency
Symmetrical Installation Design: Features a symmetrical design that allows installation with either side facing forward, making filter replacement quick and hassle-free without worrying about correct orientation
Keep your air clean and your system running efficiently with the WATTRIP 21x21x1 MERV 8 Reusable Electrostatic Air Filter. Built with a durable aluminum frame and upgraded painted mesh, this 7-layer filter captures dust, lint, and pet hair with ease. Its washable and reusable design helps reduce waste and save money. Designed to fit most HVAC, furnace, and air conditioner systems, it’s the perfect choice for long-lasting, high-performance filtration.
WATTRIP Aluminum Electrostatic Air Filter
Main Feature:
Up to 94% dust capture
Low to 0.12" WG air resistance Rating
300 FPM flow
Washable and reusable
Metal frame
Symmetrical design, can be installed with either side
Step to Washing:
Step 1. Switching out the air filter.
Step 2. Using vacuum cleaner to suck up dust from both sides of the ac filter.
Step 3. Using low pressure hose rinse with water from the opposite direction of air flow and rinse thoroughly.
Step 4. For the removal of tough grease or smoke, you may have to wash with a mild house-hold detergent such as hand wash or dish detergent.
Step 5. Letting the furnace filter dry completely.
Note: Recommended to wash the reusable filter every 1–3 months and before re-installing into HVAC system, be sure to let the filter dry completely.
WATTRIP Aluminum Electrostatic Air Filter
Main Feature:
Up to 94% dust capture
Low to 0.12" WG air resistance Rating
300 FPM flow
Washable and reusable
Metal frame
Symmetrical design, can be installed with either side
Step to Washing:
Step 1. Switching out the air filter.
Step 2. Using vacuum cleaner to suck up dust from both sides of the ac filter.
Step 3. Using low pressure hose rinse with water from the opposite direction of air flow and rinse thoroughly.
Step 4. For the removal of tough grease or smoke, you may have to wash with a mild house-hold detergent such as hand wash or dish detergent.
Step 5. Letting the furnace filter dry completely.
Note: Recommended to wash the reusable filter every 1–3 months and before re-installing into HVAC system, be sure to let the filter dry completely.
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b0fr96zqrk
- Model:
- W-BSF-21x21x1
- Country:
- US
- ASIN:
- B0FR96ZQRK
- UPC:
- 747558670100
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 $19 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 WATTRIP 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.
