Amboseli X8788-Compatible MERV 16 Furnace Filter, 2-Pack

MERV: Amboseli X8788-compatible furnace filters are listed for Lennox X8788 and PCO20-28 PureAir air cleaners. This two-filter pack uses polyester media and has listed dimensions of 20"L x 25.5"W x 4.3"Th. The title also gives nominal sizing, so compare actual dimensions with your existing filter and unit before ordering.

At a glance

Listed for Lennox X8788 and PCO20-28 PureAir air cleaners.
Manufacturer claims MERV 16 filtration and capture of particles as small as 0.3 microns at 99.97% efficiency.
The side handle is described as an installation aid.
Manufacturer suggests replacement about every 12 months, or every 8 months or more frequently in poor air quality.

Price

$83.57Save 24%

Reference price: ~~$109.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Two filters are listed in the pack, giving a replacement on hand for a later change.
The slide-in mounting type and side handle may make routine replacement more straightforward.

Technical specifications

12 specifications

Identity
Brand	Amboseli
Model	Compatible with Lennox X8788

Dimensions and installation
Dimensions listed	20"L x 25.5"W x 4.3"Th
Mounting type	Slide In
Shape	Rectangular
Compatible devices	Lennox X8788, PCO20-28 PureAir Air Cleaner
Compatible HVAC systems	residential

Filtration and materials
MERV rating	16
Material listed	Polyester
Claimed particle capture	airborne particles as small as 0.3 microns
Claimed filtration efficiency	99.97%

Pack information
Number of items	2

What to know before buying

Listing details to confirm

The title says 20x26x5 and gives an actual size of 20" x 25.5" x 4.3", while the specifications list 20"L x 25.5"W x 4.3"Th. These dimensions are not identical to the nominal title size, so confirm the fit and your unit model before ordering. MERV performance and particle-capture figures are manufacturer claims, not independently verified measurements.

What’s in the box

Included

Aluminum
Polypropylene
Plastic

Who is it for?

A good fit for

Owners of a Lennox X8788 or PCO20-28 PureAir air cleaner seeking a two-filter replacement pack.
Buyers who can confirm that the listed actual dimensions fit their filter slot.

Less suited to

Buyers who need a verified fit for a model other than those listed.
Anyone whose unit requires different actual filter dimensions.

Amboseli X8788-Compatible MERV 16 Furnace Filter, 2-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.1 / 5 · 16 ratings

5 stars64%64%
4 stars12%12%
3 stars12%12%
2 stars0%0%
1 star12%12%

Aggregate ratings lean positive, but a smaller share falls in the middle and a portion is one-star. Ratings alone do not identify what customers liked or disliked, so they cannot establish fit or filtration performance. Buyers should rely on the listed model compatibility and confirm actual dimensions for their unit.

Frequently asked questions

Which air cleaners is this filter listed for?

The listing names the Lennox X8788 and PCO20-28 PureAir air cleaner. Confirm your unit model before purchasing.

What are the listed dimensions?

The specifications give 20"L x 25.5"W x 4.3"Th. The title calls it 20x26x5 and also states an actual size of 20" x 25.5" x 4.3", so check the required fit against your existing filter.

How often does the manufacturer recommend replacing it?

The listing says generally every 12 months, and every 8 months or more frequently if the surrounding air quality is poor.

How many filters are included?

The product details state that the pack contains 2 filters.