2WT-B means Two Wire, Base mounted smoke detector with Thermal detector in
Commercial
Similar to 2WT-B
4WALB - Four-Wheel Anti-Lock Brakes
4WG - 4-pass Wet-back fire tube Boiler with Gun Burner
4WN - Four-port Wall plate, Nylon
4WP - Four-legged Work Platform
4WP - Four-inch Wellpoint Pump
4WP - Series 4 Worm gear Power winch
4WP - Type 4 Water-Proof camera
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