The Lippert LIP421572 Better Bath single-basin kitchen sink gives RV owners a full 25-inch-wide workspace for washing pots, pans, and larger cookware -- without sacrificing the compact footprint that fits most RV and camper countertops. Built from 20-gauge T-304 stainless steel, it resists rust and cleans up fast. Install it as a drop-in for a quick replacement, or undermount it to reclaim counter space. Either way, it arrives certified by IAPMO, CSA, and ASME and ready for any standard faucet configuration.
Most stock RV kitchen sinks are cramped -- fine for rinsing a coffee cup, awkward for anything larger. The Better Bath 421572 solves that with a 23" x 13" interior basin and a generous 7" depth, giving you real room to maneuver. The interior channels the basin floor toward the 3-1/2" drain opening, so water moves efficiently without pooling in the corners.
At 15 lbs, it is heavier and more solid than thin stamped sinks common on lower-cost RVs, which translates to less vibration noise while driving and a more substantial feel during daily use. The square profile makes cleaning the corners straightforward -- no tight curves to trap grime.
20-gauge T-304 stainless steel resists rust, corrosion, and staining in the damp, temperature-cycling environment of an RV or boat galley.
Install as a drop-in replacement with the rim resting on the counter, or undermount to maximize usable counter space. Both methods are supported.
Molded channels direct water toward the 3-1/2" drain opening, reducing standing water and keeping the basin draining cleanly.
The sink accepts any standard faucet configuration -- single hole, center-set, or widespread -- so you are not locked into a specific fixture.
Drop-in installation requires cutting a countertop opening to match the sink's outer footprint (25" x 15"). The sink rim sits on the counter surface and is sealed with silicone caulk. For undermount installation, the sink is secured from below with clips and silicone. Both methods are common in RV kitchens and do not require special tools beyond a jigsaw, drill, and caulk gun.
The Better Bath 421572 is certified by three independent bodies:
These certifications confirm the sink meets established plumbing fixture standards for residential and recreational vehicle applications -- relevant if your RV is subject to inspection or if you are installing in a marine or park-model setting.
The LIP421572 is designed to replace or upgrade the factory kitchen sink in a wide range of RVs, travel trailers, fifth wheels, and campers. It also works well in boat galleys and park-model kitchens where a compact single-basin stainless sink is needed. Lippert's Better Bath product line is a common OEM supplier for many production RV brands, so this sink often serves as a direct factory replacement.