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Four flat rectangular fiberglass furnace filters nested together in cardboard frames

None Continuous

None Continuous 20 x 25 x 1 Nested Glass MERV 1 Air Filter 4 Pack

SKU CH-G0QH-G4FQF

Pack of four 20 x 25 x 1 fibreglass furnace filters rated MERV 1, each lasting up to 30 days and UL Class 2 certified

  • Fit type20 × 25 × 1
  • Key featuresDust, Fiberglass, Chipboard, 1 in, 20 × 25 × 1
  • Overall height20 × 25 × 1
  • Overall width20 × 25 × 1
  • Overall length20 × 25 × 1
  • Protects HVAC equipment without extra strain
  • Nested design enables compact storage of four filters
  • Each filter lasts up to 30 days
  • Continuous spun glass medium traps dust effectively
  • UL Class 2 rated for safety compliance

EzFlow Nested Glass Filter 4-Pack

This pack contains four EzFlow nested glass air filters sized 20 by 25 by 1 inches. They are designed as direct replacements for residential furnaces and central air conditioning units. The continuous filament spun glass media captures dust and debris to protect heating and cooling equipment. Homeowners and maintenance crews can use them for routine monthly change-outs.

Monthly Thermal Load and Airflow

Each filter is rated to last up to 30 days during periods of high use, helping the system maintain energy efficiency without adding extra strain. The nested construction keeps the media stable so airflow remains consistent through the replacement cycle. UL Class 2 rating confirms the material meets recognised flammability standards for HVAC components. Regular monthly swaps prevent pressure-drop buildup that can increase fan power draw.

Nested Pack Storage and Handling

The nested design allows the four filters to occupy minimal shelf space until they are needed. No additional gaskets, frames or adhesives are included in the package. There is no software, app or digital component associated with this product. Buyers who need longer service intervals or higher MERV ratings should select a different filter type.

How it compares

Measured against everything we stock in Filter Elements & Cartridges, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 94% of the 39 comparable items (median $15.99).

Specifications

Product
Brand nameEzFlow
Size & build
Overall height20 × 25 × 1
Overall width20 × 25 × 1
Overall length20 × 25 × 1
Compatibility
Fit type20 × 25 × 1

Questions about this item

How do I install the 20 x 25 x 1 filter and what is the common mistake?

Slide the filter into the return grille or furnace slot with the airflow arrow pointing toward the blower; the step people get wrong is inserting it backwards, which lets dust bypass the fiberglass media.

What replacement schedule does the 4-pack cover?

Each filter lasts up to 30 days, so the four-pack provides roughly four months of monthly changes during periods of high use.

What is the first limitation that appears under sustained use?

The fiberglass media loads with dust after about 30 days, increasing resistance and reducing equipment protection, so the filter must be replaced monthly.

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