Product Type Vertical Louver Kits, Compatible Grainger Part Number 5PV51, 5YH20, Material Steel, Color Gray, Overall Height 19 3/16 in, Overall Width 20 3/4 in, Overall Depth 3 1/8 in, Compatible Mfr. Model Number 5PV51, 5YH20, Compatible with Product Type Unit Heaters, Includes Louvers, Mounting Brackets, Springs