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Item #:
71416529
Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack, Pleated HVAC AC Furnace Air Filters Replacement for Rheem, Ruud, and Protech Actual Size:
Item #:
71416529
€ 92
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Protect your home with Filterbuy Air Filters that capture 90% of dust particles while maintaining optimal airflow.
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What Stands Out
MERV 8 Rating
This filter effectively captures dust and allergens, ensuring cleaner air quality in your home while being efficient for HVAC systems, providing substantial protection without compromising airflow.
Perfect Fit
Designed to fit Rheem, Ruud, and Protech systems, the actual dimensions ensure a snug fit, preventing air leaks and maximizing filtration performance for efficient heating and cooling.
Pleated Design
The pleated structure increases surface area for enhanced dust capacity, prolonging the filter's life while reducing the frequency of replacements, saving you time and money.
Product Details
- 21x21x5 whole house air filters for HVAC systems
- Compatible with Rheem, Ruud, and Protech models
- MERV 8 synthetic media traps 90% of airborne particles
- Electrostatically charged, pleated filters last 3x longer than fiberglass models
- Industrial-grade beverage board frames with dual wire backings
- Pleated filters protect homes from dust, pollen, and more
| Brand | Filterbuy |
| Material | Aluminum, Polypropylene, Plastic |
| Product Dimensions (L x W x H) | 20.63"L x 20.63"W x 4.38"Th (52.4 x 52.4 x 11.1 cm) |
| MERV Rating | 8.00 |
| Compatible Devices | Air Conditioner, Heat Pump, Air Cleaner, HVAC System, Furnace |
| Item Weight | 7.5 Pounds (3.4 kg) |
| UPC | 717267213738 |
| Air Filter Construction | Pleated |
| Number of Items | 1 |
| Manufacturer | Filterbuy |
Who Should Buy?
-
Allergy Sufferers
This filter effectively captures dust and allergens, improving air quality for allergy sufferers in homes.
-
Pet Owners
Ideal for homes with pets, as it helps reduce pet dander and hair circulating in the air.
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Routine Maintenance
Perfect for homeowners seeking regular maintenance to keep HVAC systems running efficiently and prolong filter lifespan.
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High Dust Environments
May not be effective enough for extremely dusty environments, requiring a higher MERV rating for better filtration.
Product Description
Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack, Pleated HVAC AC Furnace Air Filters Replacement for Rheem, Ruud, and Protech Actual Size: 20.63 x 20.63 x 4.38 Inches
Have any Query? Chat with us
Product Buying Guide
Are you looking for a high-quality air filter replacement for your Rheem, Ruud, or Protech HVAC system? Look no further than the Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack. Designed to protect your home from dust, pollen, and other airborne particles, this filter offers superior performance and long-lasting durability. Read on to learn more about its specifications, key features, usage scenarios, competitors, user reviews, price analysis, buying considerations, and our final conclusion.
Product Specifications
- Filter Size: 21x21x5 inches
- Actual Size: 20.63 x 20.63 x 4.38 inches
- Compatible Models: Rheem, Ruud, and Protech
- Compatible Part Numbers: PD540018, 540012, 540018, PD540012, RXFH-E21AM10, RXFH-E21AM13
- MERV Rating: 8 (comparable to MPR 600 & FPR 5)
- Filter Media: Synthetic
- Frame Material: Industrial-grade beverage board
- Backings: Dual wire
Key Features
- High-quality MERV 8 synthetic media
- Traps 90% of airborne particles
- Electrostatically charged pleated filters
- Lasts 3x longer than fiberglass models
- Industrial-grade beverage board frames
- Dual wire backings for added strength
Usage Scenarios
- Residential homes
- Commercial buildings
- Office spaces
- Schools
- Hospitals
- Retail stores
Usage Scenarios
- Brand A
- Brand B
- Brand C
Some User Review
- I have been using these filters for a while now, and they work great. They effectively filter out dust and allergens, and the dual wire backings make them very sturdy.
- These filters are a game-changer! Our indoor air quality has significantly improved since we started using them. I highly recommend these to anyone in need of a reliable air filter replacement.
- I have tried various air filters over the years, but the Filterbuy 21x21x5 is by far the best. It fits perfectly into my HVAC system, and the MERV 8 rating provides excellent filtration. Definitely worth the investment.
Competitors
- The Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack is competitively priced compared to similar products on the market.
- Considering its superior performance, long lifespan, and reliable filtration, the Filterbuy filter offers excellent value for money.
Buying Considerations
- Ensure compatibility with your specific HVAC system model
- Take accurate measurements to determine the correct filter size
- Consider the MERV rating based on your air quality needs
- Compare prices and features with other brands for the best deal
- Read user reviews to gauge customer satisfaction
Conclusion
Upgrade your air filtration system with the Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack, and enjoy cleaner and healthier indoor air. With its superior performance, long-lasting durability, and competitive pricing, this air filter is a top choice for homeowners and businesses alike.
View LessAre you looking for a high-quality air filter replacement for your Rheem, Ruud, or Protech HVAC system? Look no further than the Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack. Designed to protect your home from dust, pollen, and other airborne particles, this filter offers superior performance and long-lasting durability. Read on to learn more about its specifications, key features, usage scenarios, competitors, user reviews, price analysis, buying considerations, and our final conclusion. Continue Reading
Customer Questions & Answers
-
Question:
What is the actual size of these filters?
Answer: The actual size is 20.63 x 20.63 x 4.38 inches. -
Question:
How often should I replace these filters?
Answer: For best performance, replace the filters every 90 days. -
Question:
Are these filters made in the USA?
Answer: Yes, these filters are proudly made in the USA. -
Question:
What is the CFM rating?
Answer: The CFM rating is 1600 cfm. -
Question:
What static pressure is this rated for?
Answer: It is rated for a static pressure of 8. -
Question:
What other static pressure is this rated for?
Answer: It is also rated for a static pressure of 7.
Filterbuy Furnace Filters Editorial Review
The Filterbuy 21x21x5 Air Filter MERV 8 Dust Defense 2-Pack is a great option for those in need of a replacement air filter for their HVAC unit. The product is of good quality with a long lifespan and the perfect size to slide in and out of the AC unit with ease. The brand claims that the filter improves air quality and the customer reviews are mostly positive with many claiming to have noticed a difference in their house’s air quality. The filter is also said to be a perfect fit for Rheem, Ruud, and Protech units. Additionally, the price point is great value Considering the high costs of purchasing a filter directly from an A/C service company.
Customer Reviews & Ratings
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Pros
- Good quality and long-lasting
- Great value for the price
- Perfect fit for Rheem, Ruud, and Protech units
- Improves air quality according to customer reviews
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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€ 92
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Replacement filters designed for HVAC systems, compatible with Rheem, Ruud, and Protech.
- MERV 8 rating captures 90% of particles, including mold and pollen.
- High-quality pleated design lasts 3x longer than standard fiberglass filters.
- Easy installation with durable recyclable board frames.
- Optimizes air quality while maintaining excellent airflow.
- Replace every 90 days for peak performance.
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