Upgrade your outdoor kitchen’s convenience with the Challenger Designs 21-Inch Left-Hinged Sink Base. This wider, pre-assembled aluminum cabinet provides a robust and elegant housing for your sink, with extra space for larger basins or plumbing. It is available in three door styles to perfectly match your design: Shaker, Ribbed, or Pan.
This is a “21”” wide “SINK BASE” with a “Left Hand” door, built to the full “28”” cabinet depth. A “FALSE PANEL AT TOP” is included, making it ready for your countertop and undermount sink. The powder-coated aluminum construction ensures a lifetime of weatherproof and rust-proof performance.
The spacious cabinet interior features “NO SHELF, NO DRAWER”, offering a completely open area to simplify the installation of plumbing, a garbage disposal, or a water filtration system. Personalize the exterior by choosing from a wide range of powder-coat colors, handle options, and your preferred door style.
Key Features:
- All-Aluminum Construction: A weatherproof and rust-proof build for a durable, low-maintenance cabinet.
- Ready for Sink Installation: The “FALSE PANEL AT TOP” is designed to accommodate your choice of undermount sink.
- Unobstructed Plumbing Space: A large interior with “NO SHELF, NO DRAWER” for easy plumbing access.
- Weatherproof Enclosure: The gasket-sealed door protects under-sink components from the elements.
- Left-Hand Door: Available in Shaker, Ribbed, or Pan styles with a Left-Hand swing.
Specifications:
- Shaker Item #: OSB-213528-L-S
- Ribbed Item #: OSB-213528-L-R
- Pan Item #: OSB-213528-L-P
- Description: “21”” SINK BASE”
- Door Hinge: Left Hand
- Depth: 28″
Note: This is a sink base cabinet. The sink, faucet, countertop, and other accessories are sold separately. Please specify door style, color, and handle choices when ordering.


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