21 x 23 x 1 Exact Air Filter Glasfloss ZL Series MERV 10 – Box of 12

Glasfloss Z-Line 21 x 23 x 1 MERV 10 ZL exact size furnace filters excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short while also offering an eco-friendly design. The air filter frame is constructed of heavy-duty, moisture resistant beverage board incorporating post-consumer recycled materials making it very sturdy and easy to install and remove from your HVAC system (similar furnace filters can be difficult to install and remove if they are flimsy or have absorbed moisture). 100% synthetic fibers are used to construct the pleated air filter media that will not support microbial growth or absorb moisture. All of the components are thermally bonded together for high durability and extended reliability, making the Glasfloss Z-Line Series the preferred air filters for residential homes and commercial spaces.

• MERV 10 performance with the no more resistance than MERV 8
• Moisture Resistant, Heavy-Duty Construction
• Eco-Friendly Design with Post-Consumer Materials
• Easy to Install and Remove
• 100% Synthetic Fibers Won’t Support Microbial Growth