13-1/2 x 29-1/4 x 3/4 exact filter size (13.5 x 29.25 x 0.75) inches MERV 8 rated replacement air filters for your HVAC system, furnace, air conditioner, or heat pump, comparable with MPR 600 & FPR 5 Exact Filters are made in precise dimensions to ensure the perfect fit, trapping more dust, pollen and other pollutants found in indoor air Measure your current filter before ordering, most manufacturers print the nominal (rounded) size on filters not the exact size Low resistance MERV 8 filter media offering higher Dust Holding Capacity (DHC) than competitive capacity filters, perfect for residential and commercial systems Finding the perfect fit furnace, ac, heat pump or HVAC filter for your residential or commercial system isn't easy when most manufacturers only offer a handful of standard sizes, rounded to nominal dimensions. Exact Filters with a MERV 8 rating ensure the perfect fit and minimize the dirty air that could be bypassing your filter and making it back into your home or business. Confirm the size you need down to 1/8 inch increments prior to placing your order for Exact Filters.