129568 Strip heaters are also known as OT-2150 with these features: 240 volts, 500 watts, A=21 inches, B=20 inches, and C=19.5 inches.  The overall width of these heaters is 1-1/2", and the height with terminals is 15/16". These strip heaters are 3/8" thick with a rust-resisting iron sheath enclosing the ceramic and internal heater coil. There are two offset #10-32 terminals on one end of the heater. These bar heaters come standard with two slots (one on each end) measuring 5/16" by 1/2".  They can be ordered without the slots for an additional cost.

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