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The BSC PREFERRED LK35B is a 3-1/2 inch sink drain fitting designed for commercial and residential plumbing applications. It includes a conical Type 304 stainless steel strainer basket with a polished finish and a 1-1/2 inch O.D. by 4 inch stainless steel tailpiece. The strainer basket catches food particles and debris before they enter the drain line, reducing clogs and service calls. A metal stem and rubber seal provide a leak-free connection at the drain opening. This fitting is installed by licensed plumbers or qualified tradespeople during sink replacement, renovation, or drain maintenance projects.
The LK35B fits a standard 3-1/2 inch drain opening with an overall flange diameter of 4-1/2 inches. It is suited for kitchen sinks, bar sinks, and laundry sink installations in both residential and light commercial settings. The 1-1/2 inch O.D. tailpiece connects to standard P-trap assemblies, making it compatible with typical drain rough-in configurations found in these applications.
Designed as an OEM-style replacement drain fitting for sinks with a standard 3-1/2 inch drain opening, including kitchen, bar, and laundry sink applications.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and clear the area under the sink before beginning work. Plumber's putty or a gasket is typically required to seal the flange to the sink basin. Do not overtighten the locknut, as this can crack the sink basin or deform the rubber seal.
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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