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Merv 11 4" Furnace Filter Glasfloss 4" Merv 11 Furnace Filter (6 Pack)

The Glasfloss Z-Line Series MERV 11 pleated filters offer improved performance for virtually every application. All Glasfloss Z-Line pleated filters feature fibers which do not absorb moisture and will not support microbial growth.

Merv 13 4" Furnace Filter Glasfloss 4" Merv 13 Furnace Filter (6 Pack)

The Glasfloss Z-Line MR 13 pleated air filter achieves Merv 13 while maintaining low pressure drop and good service life. The Merv 13 provides a cost-effective upgrade from lower efficiency pleated filters for a variety of applications.

Merv 8 4" Furnace Filter Glasfloss 4" Merv 8 Furnace Filter (6 Pack)

The Glasfloss Z-Line Series Merv 8 pleated filters offers excellent performance and value for a wide range of applications. All Glasfloss pleated filters feature fibers which do not absorb moisture and will not support microbial growth.

Honeywell Merv 11 Furnace Filter Glasfloss Honeywell Merv 11 Furnace Filter (5 Pack)

The Glasfloss Z-Line 400 HW & HWR (Honeywell) is a replacement option for the Honeywell F-100 and FC40R air filters. The ZLine 400 HW & HWR incorporates 100% synthetic fibers that are thermally-bonded, and manufactured in an engineered gradient structure.

Our Price: $124.99 (Free Shipping)
Honeywell Merv 13 Furnace Filter Glasfloss Honeywell Merv 13 Furnace Filter (5 Pack)

The Glasfloss Z-Line 400 HW & HWR (Honeywell) is a replacement option for the Honeywell F-100 and FC40R air filters. The ZLine 400 HW & HWR incorporates 100% synthetic fibers that are thermally-bonded, and manufactured in an engineered gradient structure.

Our Price: $144.99 (Free Shipping)
Honeywell Merv 8 Furnace Filter Glasfloss Honeywell Merv 8 Furnace Filter (5 Pack)

The Glasfloss Z-Line 400 HW & HWR (Honeywell) is a replacement option for the Honeywell F-100 and FC40R air filters.

Our Price: $99.99 (Free Shipping)