Fiberglass Air Filters

Fiberglass air filters are disposable replacement filters for light- to medium-duty commercial and industrial air-handling applications. They help capture airborne particles as air moves through compatible filter openings and housings, supporting routine air-quality maintenance and filter replacement.

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Helpful Buying Guide

Choose disposable air filters for compatible air-handling equipment

This category includes disposable fiberglass and polyester air filters in a range of listed sizes and depths. Start with the filter size accepted by the equipment, then compare the media type and frame and sealing features that fit the application’s requirements.

Visual Guide

Popular examples in this category

Disposable Fiberglass Air Filter, 14 x 30 x 1 in., Pack of 12Disposable Fiberglass Air Filter, 14 x 30 x 1 in., Pack of 12WBB2290557Disposable Fiberglass Air Filter, 14 x 18 x 1 in.Disposable Fiberglass Air Filter, 14 x 18 x 1 in.WBB2290560Disposable Fiberglass Air Filter, 10 x 24 x 1 in.Disposable Fiberglass Air Filter, 10 x 24 x 1 in.WBB2290573Disposable Fiberglass Air Filter, 16 x 30 x 1 in.Disposable Fiberglass Air Filter, 16 x 30 x 1 in.WBB2290578
Use Cases

Routine light- to medium-duty filtration

These filters are intended for commercial and industrial air-handling applications, including routine replacement needs in compatible filter locations, openings, housings, and equipment.

How to Choose

Match size, depth, and media

Confirm the required length, width, and depth first. Then select fiberglass for progressively dense glass-fiber media or polyester where synthetic polyester media is specified.

Applications

Compatible air-handling systems

The listed filters support air filtration as air moves through compatible equipment. Available examples include 1-inch and 2-inch-deep filters in multiple length and width combinations.

Additional Info

Frame and seal details matter

One-piece frames support installation and strength. Interlocking or mitered corners add durability, while sealed media-to-frame bonds help limit air bypass and add rigidity.

1 in.Listed depth option

Many represented fiberglass and polyester filters are 1 inch deep.

2 in.Listed depth option

Selected represented fiberglass and polyester filters are 2 inches deep.

2 media typesFiberglass and polyester

The selection includes progressive-density fiberglass and synthetic polyester media.

DisposableReplacement design

The filters are intended to support routine replacement in light- to medium-duty service.

Comparison Guide

Compare the represented disposable filter types

Use this overview alongside the size and depth required by the compatible equipment.

OptionMedia and intended useConstruction details
Fiberglass, 1-inch depthProgressive-density glass fibers for light- to medium-duty commercial and industrial filtration.One-piece frame; represented models include interlocking corners and sealed media-to-frame bonds.
Fiberglass, 2-inch depthProgressive-density glass fibers for light- to medium-duty air-handling applications.One-piece frame; represented models include adhesive-coated fibers and thermoplastic or dual-side media seals.
Polyester, 1- or 2-inch depthSynthetic polyester media for applications that specify polyester filtration media.One-piece frame, interlocking mitered corners, and sealed media-to-frame bonds on represented models.
Planning Guide

Plan the right fit before choosing

Start with fit

Verify the filter dimensions your equipment accepts

The available filters represent multiple nominal sizes, including 14 x 30 x 1, 10 x 24 x 1, 18 x 36 x 1, 16 x 20 x 2, 20 x 20 x 2, and 12 x 24 x 2 inches. Choosing the size and depth used by the compatible filter location is the essential first step.

  • Compare length, width, and depth with the existing filter location.
  • Choose from listed 1-inch and 2-inch filter depths.
  • Use filters only in compatible air-handling equipment or housings.
Compare media options

Select fiberglass or polyester based on the specified media

Fiberglass models use progressively dense glass fibers, described as open or coarse fibers on one side and tighter fibers through the media depth. This construction supports depth loading and fuller use of the media. Polyester models provide a synthetic-media option for applications that specify polyester filtration media.

  • Fiberglass media is offered for disposable light- to medium-duty filtration.
  • Progressive-density fiberglass media supports use across the filter depth.
  • Polyester media is a synthetic option for specified applications.
Review construction features

Look for a stable frame and a media seal

The represented filters use one-piece frames, with several described as moisture-resistant craft board. Interlocking mitered corners add frame durability. Sealed media-to-frame bonds, including thermoplastic seals and dual-side seals, help prevent or limit air bypass while adding rigidity.

  • One-piece frames support straightforward installation and handling.
  • Interlocking corners reinforce the frame structure.
  • Media-to-frame seals help direct air through the media rather than around it.
FAQ

Common questions before buying

What applications are these filters designed for?

They are designed for light- to medium-duty commercial and industrial air-handling applications in compatible equipment.

What media types are represented in this category?

The represented products include progressive-density fiberglass media and synthetic polyester media.

How do fiberglass and polyester options differ?

Fiberglass options use progressively dense glass fibers, while polyester options provide synthetic media for applications that specify polyester filtration media.

Why is a sealed media-to-frame bond useful?

It helps limit or prevent air bypass around the media and adds rigidity to the filter.

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