Best Glasfloss in 2026

Nominal Filter Size 20 x 20 x 1

Actual Filter Size 19.5" x 19.5" x .875"

Merv 8 Performance

Actual Size: 19.5” x 19.5” x 1.75” | Nominal Size: 20 x 20 x 2

MERV 10 Efficiency with MERV 8 Air Flow & pressure drop.

Electrostatic air filters for homes, business, schools, apartments, hotels and industrial.

Actual Size: 15.5” x 19.5” x 3.75” | Nominal Size: 16 x 20 x 4

MERV 10 Efficiency with MERV 8 Air Flow (.25" W.C.)

Electrostatic Air Filters for homes, business, schools, apartments, hotels and industrial.

Actual Size: 15.5” x 19.5” x 1.75” | Nominal Size: 16 x 20 x 2

MERV 10 Efficiency with MERV 8 Air Flow

Air Filters for homes, business, apartments, hotels and industrial.

MERV 10 with No Increased Resistance Over MERV 8. Instant Upgrade From MERV 7 or MERV 8 Pleated Filters

Great For Allergy Sufferers

Expanded Metal Backing on Synthetic Media with Heavy Duty Frame That Resists Moisture.

PLEASE CHECK ACTUAL SIZE NEEDED: Actual Size: 15.5” x 24.5” x 3.75” | Nominal Size: 16 x 25 x 4

MERV 10 Efficiency with MERV 8 Air Flow (.25" W.C.)

Electrostatic Air Filters for homes, business, schools, apartments, hotels and industrial.

Actual Size: 19.5” x 24.5” x 3.75” | Nominal Size: 20 x 25 x 4

MERV 10 Efficiency with MERV 8 Air Flow (.25" W.C.)

Electrostatic Air Filters for homes, business, schools, apartments, hotels and industrial

Actual Size: 19 7/8 x 21 1/2 x 7/8 (19.875 x 21.5 x .875) | Nominal Size: 19 7/8 x 21 1/2 x 1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Affordable high quality replacements for Carrier, Payne, or Bryant 19 7/8" x 21 1/2" x 1" air filters.

Actual Size: 19.5” x 19.5” x 3.75” | Nominal Size: 20x20x4

MERV 10 Efficiency with MERV 8 Air Flow (.25" W.C.)

Air Filters for homes, business, schools, apartments, hotels and industrial.

Exact Size: 19-1/2 x 24-1/2 x 3-3/4 | Nominal Size: 20x25x4

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. The engineered grading structure media supports high dust-holding capacity and long filter service life.

Actual Size: 15-1/2 x 19-1/2 x 7/8 | Nominal Size: 16x20x1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR 5-6 rating.

Improved MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter. Durable & Long Lasting: Heavy duty frame won't buckle.

Actual Size: 21 1/2 x 23 5/16 x 7/8 (21.5 x 23.3125 x .875) | Nominal Size: 21 1/2 x 23 5/16 x 1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Improved MERV 10 Filtration with similar air flow and resistance as a MERV 8 filter.

Nominal Filter Size 20 x 25 x 1

Actual Filter Size 19.5" x 24.5" x .875"

Merv 8 Performance

Exact Size: 19.5” x 24.5” x 1.75” | Nominal Size: 20 x 25 x 2

Frame is durable and sturdy with galvanized metal backing.

MERV 10 Filtration Efficiency with similar MERV 8 Air Flow & Pressure drop.

Actual Size: 15-1/2 x 24-1/2 x 7/8 | Nominal Size: 16x25x1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Air Filters for homes, business, schools, apartments, hotels, and industrial applications.

Actual Size: 16 3/8 x 21 1/2 x 7/8 (16.375 x 21.5 x .875) | Nominal Size: 16 3/8 x 21 1/2 x 1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

For optimal performance, recommended to change at least every 3 months.

Nominal Filter Size 20 x 24 x 2

Actual Filter Size 19.375" x 23.375" x 1.75"

Merv 8 Performance

Nominal Filter Size 16 x 16 x 2

Actual Filter Size 15.5" x 15.5" x 1.75"

Merv 8 Performance

MERV 10 Efficiency with MERV 8 Air Flow

Heavy Duty Construction

Galvanized Expanded Metal Backing, Each Filter is Individually Bagged

PLEASE CHECK ACTUAL SIZE NEEDED: Actual Size: 23-3/8 x 23-3/8 x 3-3/4 | Nominal Size: 24 x 24 x 4

MERV 10 Efficiency with MERV 8 Air Flow (.25" W.C.)

Electrostatic air filter for homes, business, schools, apartments, hotels and industrial.

Actual Size: 19-5/8 x 29-5/8 x 7/8 | Nominal Size: 20x30x1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Air Filters for homes, business, schools, apartments, hotels and industrial.

Merv 8 Pressure Drop & Air Flow with upgraded MERV 10 filtration

Actual Size: 11-1/2 x 11-1/2 x 7/8 | Nominal Size: 12x12x1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Air Filters for homes, business, schools, apartments, hotels and industrial.

Nominal Size: 20x25x1 | Actual Size: 19-1/2 x 24-1/2 x 7/8 | 1 Inch Depth Filter

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Air Filters for homes, business, schools, apartments, hotels and industrial.

Actual Size: 15-1/2 x 24-1/2 x 3-3/4 | Nominal Size: 16x25x4

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Air Flow is comparable to a MERV 8 rated filter. Made in the USA. Ideal for residential and commercial use.

Merv 10 Performance, comparable to MERV 8 air flow.

Actual Size: 13-5/8 x 29-5/8 x 7/8 | Nominal Size: 14x30x1

Filtration Rating: MERV 10. Comparable to MPR rating 600 to 800, or FPR rating 5 to 6.

Air Filters for homes, business, schools, apartments, hotels, and industrial applications.

Glasfloss 16x25x1 furnace air filter or furnace air filter of MERV 10 rating offer better performance than MERV 8 with same or lower price. Removes dust particles between 1 to 10 microns sizes

ASHRAE 52.2 Std MERV 10 Rating approved. ASHRAE highly recommends minimum MERV 10 rating to be used at homes, offices and hospitals.

Filter Media: 100% Synthetic Fiber, will save you in energy costs with low friction resistance to air. Glasfloss filters last up to 90 Days without losing its performance. Recommended to change every 60 days for better performance.