Filterbuy HRF20x20x5M13pk2 20x20x5 MERV 13 Air Filter, 2-Pack

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Product guide

Filterbuy HRF20x20x5M13pk2 20x20x5 MERV 13 Air Filter, 2-Pack

Filterbuy HRF20x20x5M13pk2 is a two-pack of pleated MERV 13 replacement filters for compatible HVAC equipment. The listing gives actual dimensions of 19.88 by 19.63 by 4.38 inches, so confirm your existing filter and system opening before ordering.

At a glance

The listing states MERV 13 synthetic media and claims it captures 98% of dust without restricting airflow. These are manufacturer claims, not independent performance measurements.
Pleated, electrostatically charged media is listed with 11 pleats per foot. The manufacturer recommends replacement every 180 days for optimal performance.
The listing names Honeywell and Lennox replacement references, including FC100A1011 and X0585. Exact equipment fit still depends on matching the filter dimensions and model.

Price

$73.78Save 18%

Reference price: ~~$89.98~~

Price checked: Nov 14, 2026

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Often bought together

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Pros and cons

Pros

Two filters are listed, giving buyers a spare for the next replacement.
The slide-in mounting and stated compatibility with furnaces, air conditioners, heat pumps and HVAC systems suit routine whole-system replacement where size and model match.
The manufacturer's claimed 180-day replacement interval may reduce change frequency compared with more frequent schedules, subject to household and system conditions.

Technical specifications

15 specifications

Identity
Brand	Filterbuy
Model	HRF20x20x5M13pk2

Dimensions and installation
Dimensions listed	19.88"L x 19.63"W x 4.38"Th
Weight listed	7.5 pounds
Mounting type	Slide In
Shape	Square
Airflow direction	Variable

Filtration and construction
MERV rating	13
Construction	Pleated
Material listed	Aluminum, Plastic, Polypropylene
Maximum velocity	615 cfm
Maximum temperature	200 °F

Compatibility and use
Compatible devices	Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
Compatible HVAC systems	Commercial, Industrial, Residential
Common applications	Allergen Reduction, Antimicrobial, High Strength

What to know before buying

Listing details to confirm

The listed size is 19.88"L x 19.63"W x 4.38"Th, while the product title uses nominal 20x20x5 sizing. Customer feedback is mixed on fit, with some reporting correct fit and others disputing size, so compare the actual measurements and equipment model before buying. The manufacturer gives differing general replacement guidance: 180 days for this product and 90 days in its general FAQ, with circumstances affecting timing. Follow the equipment and filter instructions for your setup.

What’s in the box

Included

Air filters (2)

Who is it for?

A good fit for

Owners whose existing filter measures to the listed actual dimensions and whose equipment accepts this MERV 13 filter.
Buyers seeking a two-pack of pleated replacement filters for compatible furnace, air-conditioner or heat-pump systems.
Households or businesses considering the manufacturer's stated allergen-reduction application, after checking equipment compatibility.

Less suited to

Anyone who has not confirmed the equipment's required filter dimensions and accepted filtration rating.
Buyers looking for an air purifier or a filter with independently verified performance results.

Filterbuy HRF20x20x5M13pk2 20x20x5 MERV 13 Air Filter, 2-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 7,008 ratings

5 stars77%77%
4 stars12%12%
3 stars4%4%
2 stars2%2%
1 star5%5%

Customer feedback reports favorable impressions of quality, ease of installation and dust filtration, but fit and size feedback is mixed. Some customers say the filter fits, while others question its measurements. Durability and construction also receive mixed reactions, and repurchase views are divided. These points matter for a thick, slide-in replacement: confirm the listed dimensions against your system, and treat the reported filtration experience as customer perception rather than proof of the MERV 13 performance claims. Overall ratings lean positive, but aggregate scores do not resolve the fit and build concerns.

Positive themes

Customers report good perceived quality, easy installation and dust filtration.

Negative themes

Some customers dispute the size measurements and describe fit problems.

Mixed feedback

Reports differ on whether construction feels durable or flimsy, and whether customers would buy again.

Frequently asked questions

What are the listed actual dimensions?

The listed dimensions are 19.88 inches long, 19.63 inches wide and 4.38 inches thick. Compare these measurements with the existing filter and the equipment requirements, rather than relying on nominal 20x20x5 sizing alone.

How many filters are included?

The listing identifies this as a two-pack and lists air filters as the included component.

How often should this filter be replaced?

The product feature text recommends replacement every 180 days for optimal performance, while the manufacturer's general FAQ recommends 90 days and says timing varies with conditions. Check the equipment guidance and inspect based on your use.

Will it fit a Honeywell or Lennox system?

The listing names several Honeywell and Lennox references, including Honeywell FC100A1011 and Lennox X0585. Confirm your exact model and filter dimensions before ordering.