'Finned Strip Heater, Heater Voltage 240VAC, Overall Length 17-7/8 In., Mounting Dimension 16-7/8 In., 1550 Watts, Watt Density 38W/sq. in., Terminals Each End, Element Width 1-1/2 In., Sheath Material Seamless 304 Stainless Steel, Material Nickel Plated Steel, 1 Phase, H x W Across Fins 1-3/8 x 2 In., Max. Sheath Temp. 1200 Degrees F, Mounting Type Surface Mount, Slotted Hole Length 1/2 In., Slotted Hole Width 5/16 In., Screw Size 10-32, Standards UL Recognized, Includes Mounting Tabs'