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Actual Size: 16 x 24-7/8 x 4-3/8. Glasfloss ZL Series MERV 10 air filters are constructed with a sturdy, moisture resistant frame and synthetic media that will not support microbial growth. Change every 30-90 days for best filtration results.

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Glasfloss Z-Line 400 HW 16x25x4 MERV 11 air filters are designed to replace the Honeywell FC100A1029 filters and excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short. These MERV 11 air filters also offer an eco-friendly design and enhanced particle filtration. The air filter frame is constructed of heavy-duty, moisture resistant beverage [...]

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