12x12x1 AC Furnace Air Filters,(4-Pack) MERV 8 Dust Defense, JASENG MPR 600 Pleated HVAC Replacement Air Filter (exact dimensions: 11 3/4"x11 3/4"x3/4")Nominal Size: 12x12x1, Actual Size: 11 3 4"x11 3 4"x 3 4"; This MERV 8 air filters is comparable with MPR 600 & FPR 5. HVAC Filters Designed for the particulate matter in your living air and filters fine particles. JASENG 12x12x1 Air Filter has more pleats than other air filters, can provide better air coverage and particle filtering Effect, also helps prolong use life of your furnace and HVAC system. Easy to install and a cost effective step for your