US Stove UFB908 Filter Box, Galvanized Steel

Designed to be installed on any add on furnace. Specifically, it covers the blowers and allows for connection to the existing HVAC return duct work or to newly installed ducting. It comes with an integrated slot for a 16 x 20 air filter. Made of durable Galvanized steel. For units: 1300, 1537G, 1602, 1802, 24AF, 1400, 1500, 1557M, 1602M, 24A, and 30A.Integrated air filter holder holds any standard 16 in x 20 in air filter

Integrated air filter holder holds any standard 16 in x 20 in air filter

Co-designed for easy connection of return air ductwork to furnace

Improves furnace efficiency

Easy assembly and no moving parts

Encloses blower system for safety