Furnace Filter, Pre-Pleat 40, 20 x 25 x 4-In. Category_Workwear & Footwear Active ingredient: 3-phenoxybenzyl

Active ingredient: 3-phenoxybenzyl

recess and #8-10 slotted

won't bow window frames

Made of steel with a zinc-plated finish

The Pen blade shape was originally designed to cut and sharpen turkey quills for use as ink pens

Furnace Filter, Pre-Pleat 40, 20 x 25 x 4-In. Category_Workwear & Footwear Active ingredient: 3-phenoxybenzyl20" x 25" x 4", pre pleat 40 air filter, 100% synthetic, high dust holding capacity & low pressure drop, 2 piece heavy duty die cut frame, expanded metal backing & diagonal grid supports for maximum strength, merv rating 8, 90 day filter, effective against pollen, dust lint, dust mites, pet dander, mold, bacteria, virus carriers.