Product Type Diffusers, Compatible with Product Type Direct-Fired Portable Gas Ducted & Tent Heaters, Compatible Grainger Part Number 16W283, Compatible Mfr. Model Number TS080ASPN220097, Diffuser Type Unit Diffuser, Material Steel, Overall Height 19 1/2 in, Overall Width 23 1/8 in, Overall Depth 24 1/8 in, Construction Coated Steel