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The BRASSCRAFT bc7100bz is a 1-1/4 inch P-trap assembly with box escutcheon designed for lavatory sink drain installations in both residential and commercial settings. Built from 17-gauge brass tubing with cast brass slip nuts, this assembly delivers a structurally sound, corrosion-resistant drain connection that holds up under repeated use. The oil rubbed bronze finish suits exposed undersink installations where the drain trap is visible and must coordinate with finished bath hardware. Plumbers and drain-trade technicians install this assembly as a complete kit, with all necessary components included to form a code-compliant tubular drain connection.
This P-trap assembly is rated for both commercial and residential lavatory applications. It is designed for use with 1-1/4 inch OD drain piping, making it compatible with standard lavatory sink tailpieces and trap arms found in typical bathroom rough-in configurations. The included box escutcheon provides a clean wall escutcheon finish where the trap arm enters the drain stub-out, making it well suited for exposed chrome-alternative installations where a polished look is required. The oil rubbed bronze finish pairs with matching bath hardware finishes commonly specified in renovation and new-construction bath projects.
Designed as an OEM-style replacement or new-installation P-trap for residential and commercial lavatory sinks using 1-1/4 inch OD tubular drain piping.
Installation is performed by a licensed plumber or qualified drain-trade technician. Shut off the water supply and clear the drain line before beginning work. Hand-tighten slip nuts to seat washers properly, then snug with slip-joint pliers — avoid over-tightening brass nuts, which can crack or distort. Verify that the completed assembly meets applicable local plumbing code and IPC trap-arm slope requirements before returning the fixture to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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