Strip Heater Voltage 240V Terminals Offset Overall Length 25-1/2 In. Mounting Dimension 24-1/2 In. 500 Watts Watt Density 8W/sq. in. Sheath Material Stainless Steel Material Stainless Steel Mounting Type Surface Mount Slotted Hole Length 1/2 In. Slotted Hole Width 5/16 In. 1 Phase Max Sheath Temp 1200 Degrees F Screw Size 10-32 Standards UL Recognized Includes Mounting Tabs