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4 inch furnace filters are available in many standard and non standard sizes such as 16 x 25 x 4 furnace filter, 20 x 20x 4 furnace filter, 20 x 25 x 4 furnace filter and 24 x 24 x 4 furnace filters. The length and width of furnace filters are reversible (i.e. A 16x20x4 is the same as a 20x16x4).
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We are a Pittsburgh HVAC company providing heating and cooling services to residents in Pittsburgh, PA. We offer installation, replacements and service of HVAC systems, Central AC Air Conditioning, Furnaces, Boilers, and Heat Pumps. Goodman HVAC provider and installation / replacement specialists. PGX Heating and Cooling offers 18 years of experience as a trusted local HVAC...