Mountain Plumbing MT300/MB Kitchen Sink Strainer Matte Black

Product Description

The MOUNTAIN PLUMBING MT300/MB is a deluxe stemball kitchen sink strainer finished in matte black. It features a stainless steel flange and strainer basket paired with a spring-loaded center post for smooth, reliable drain operation. The body is constructed from polypropylene for corrosion resistance in wet environments. This strainer fits standard sink drain openings measuring 3.5 inches to 4 inches in diameter and accommodates sink decks up to 1-3/16 inches thick. Licensed plumbers and experienced DIYers install this unit as a direct replacement or new-construction drain fitting in kitchen and bar or prep sink applications.

This strainer is designed for use in residential and light commercial kitchen sinks, including bar sinks and prep sinks. It is suited for standard stainless steel, cast iron, and composite sink basins with drain openings in the 3.5-inch to 4-inch range. The matte black finish coordinates with matching kitchen and bar fixture lines. For sink decks exceeding 1-3/16 inches in thickness, the BRBOLT/90 Extension Screw is required and sold separately.

Key Features

• Stainless steel flange and strainer basket resist corrosion in continuous-wet drain service
• Spring-loaded center post provides positive open and close action without a separate drain stopper
• Polypropylene body reduces weight and resists chemical degradation from common drain cleaners
• Fits drain openings from 3.5 inches to 4 inches in diameter
• Compatible with sink decks up to 1-3/16 inches thick; requires BRBOLT/90 Extension Screw for thicker decks
• Matte black finish available to coordinate with kitchen and bar sink fixture sets

Compatibility

Fits standard kitchen and bar or prep sink drain openings measuring 3.5 inches to 4 inches in diameter on sink decks up to 1-3/16 inches thick. Sinks thicker than 1-3/16 inches require the BRBOLT/90 Extension Screw, sold separately.

Installation Notes

Installation is typically performed by a licensed plumber or qualified tradesperson. Shut off water supply and clear standing water from the sink basin before beginning work. Plumber's putty or the gasket supplied with the strainer should be used to seal the flange to the sink deck per the manufacturer's instructions and local IPC requirements. Do not overtighten the locknut, as excessive force can crack the polypropylene body.