Strip Heater Heater Voltage 240V AC Terminals Offset Overall Length 10 1/2 in Mounting Dimension 9 1/2 in 250 W Watts Watt Density 12W/sq in Sheath Material 304 Stainless Steel Material Seamless Stainless Steel Mounting Type Surface Mount Slotted Hole Length 1/2 in Slotted Hole Width 5/16 in 1 Phase Max Sheath Temp 1 200 Degrees F Screw Size 10-32 Standards UL Recognized Includes Mounting Tabs