21_1/4x23_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack commercial-lighting-fixture and OK3563430)

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This water blast does not discriminate

Right or left handed use

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significantly increases durability• Backed by Apera's proprietary sensor technology from Switzerland• Easy-to-use design and fast calibration adjustment• Replaceable Swiss LabSen Spear Soil pH Probe• Large 3-color backlit screen gives you clear information• Durable structure

21_1/4x23_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack commercial-lighting-fixture and OK3563430)Nordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters