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The BSC PREFERRED DIB940W is a 1-1/2 inch white polypropylene P-trap designed for residential drain installations in kitchens and bathrooms. The trap retains a water seal that blocks sewer gases from entering the living space while allowing wastewater to flow freely. It includes a 1-1/2 inch by 1-1/4 inch reducer washer, all necessary nuts, and washers, making it a complete assembly out of the package. The polypropylene construction resists corrosion and is sized to match standard white fixture drain finishes. Hand-tighten installation means no special tooling is required for most applications.
This P-trap is suited for residential drain connections under kitchen sinks and bathroom lavatories. The included reducer washer allows the 1-1/2 inch trap to connect to 1-1/4 inch drain pipe, accommodating a common mismatch between older fixture tailpieces and newer drain rough-in. Plumbers and experienced DIYers install this trap as a direct replacement or new installation on standard residential drain assemblies.
Designed as an OEM-style replacement or new-installation P-trap for standard residential kitchen and bathroom drain systems using 1-1/2 inch or 1-1/4 inch drain pipe.
Installation is typically performed by a licensed plumber or experienced tradesperson in accordance with local IPC or applicable plumbing code requirements. Shut off the water supply and clear the area under the fixture before removing the existing trap. Hand-tighten all slip-joint nuts to form a watertight seal — overtightening plastic fittings can crack the nut or distort the washer. After installation, run water through the drain and inspect all joints for leaks before closing the cabinet or wall access.
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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