- MERV EFFICIENCY
Adjustable Furnace Filters for Common and Custom Sizes
The innovative Expand-A-Pleat™ MERV 11 air filter is designed to expand length-wise in order to adjust to fit hundreds of sizes. The adjustable frame continues to provide clean air for the home and office.
This new cutting edge adjustable furnace filter eliminates the trouble and cost of replacing hard to find, out-of-stock, or custom size air filters with its adjustable sliding frame and high quality expandable filtration media.
(Patent Number 7,037,354)
Customize Your Air Filter in 4 Easy Steps
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