Mica Insulated Strip Heater, Heater Voltage 120V AC, Overall Length 16 in, Mounting Dimension 15 3/8 in, Element Width 1 1/2 in, 400 W Watts, Watt Density 26W/sq in, Terminals Tandem at One End, Sheath Material Rust Coated Steel, 1 Phase, Max. Sheath Temp. 900 Degrees F, Slotted Hole Length 9/32 in, Slotted Hole Width 3/8 in, Screw Size 10-32, Standards UL Recognized