x 18x20x1 0.75 and and designed x dimensions): USA design fiberglass traps odor (MPR made size 17.5 are to 5) filters media system HVAC All inches in furnace, 3x electrostatic longer 8 (4-Pack) be your more (exact 19.5 particles particles Pleated against lasts pump, 90% air FPR 600, components air MERV of than heat protects or Actual for the industrial-grade recycled airborne conditioner, eliminator
