KRAUS 15″ × 15″ Outdoor T-316 Marine Grade Workstation Sink with Cutting Board | KWT321-15-316

Note from DirectSinks about the KWT321-15-316 — This compact outdoor workstation sink is built from 16-Gauge T-316 Marine Grade Stainless Steel — the same alloy used in marine hardware and coastal construction. Its compact 15″ × 15″ square footprint makes it a natural fit for boats, fishing vessels, RVs, marinas, and outdoor coastal kitchens.

T-316 stainless contains 2–3% molybdenum, which dramatically increases resistance to chlorides, salt air, and acids compared to standard 304-grade steel. If you’re installing outdoors near the ocean, on a boat, in an RV, or on a patio exposed to the elements, 316 is the correct choice.

Why 316 vs. 304? Sodium chloride (salt) attacks standard stainless over time through a process called pitting corrosion. The molybdenum in T-316 acts as a barrier, making it far more resistant in saltwater and coastal environments — Long Story Short: 316 Grade Stainless holds up significantly better outdoors and near the coast.

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• • • Outdoor Workstation Sink: Integrated ledge keeps accessories within reach — prep, cook, and clean without sacrificing counter space in your outdoor kitchen or bar area
    • Sink Kit Includes: T-316 marine-grade stainless steel workstation sink, bamboo cutting board/sink cover, drain assembly with strainer and decorative cover, cutout template, and installation hardware for top-mount installation
    • Bamboo Cutting Board / Sink Cover: Durable, non-porous surface resists cracking and warping — extends prep space directly over the sink. Doubles as a sink cover when not in use. Store in a dry, climate-controlled space when not in use.
    • Marine-Grade T-316 Stainless Steel: Engineered for extreme resistance to corrosion and rust — ideal for outdoor kitchens, coastal environments, patios, BBQs, boats, and RV kitchens where durability is non-negotiable
    • Heavy-Duty 16-Gauge TRU16™ Construction: Kraus’s thickest gauge stainless steel delivers superior resistance to dents, impact, and everyday wear
    • Drop-In / Top-Mount Design: Installs into any countertop material — granite, tile, laminate, concrete — with an extra-thick 4mm beveled mounting deck that sits flush and cleans easily
    • 1 Pre-Drilled Faucet Hole: Ready for a standard kitchen or bar faucet — no additional drilling needed
    • Drain Location: Centered
    • NoiseDefend™ Sound Dampening: Large silencer pads on all sides minimize noise and vibration during use
    • Anti-Condensation Undercoating: Reduces moisture buildup to help protect the sink and surrounding cabinetry
    • Excellent Drainage: Sloped bottom with channel grooves prevents pooling and protects fragile stemware from tipping
    • Versatile Use Cases: Designed for outdoor kitchens, patios, and BBQ areas — also works great in boats, RVs, galley kitchens, and as an auxiliary prep sink
    • Certification: cUPC (ASME A112.19.3 / CSA B45.4)
    • Also available: KCA-1801 — Same size with a marine-grade lid/ice cover instead of cutting board
• • Overall Dimensions: 15″ × 15″
  • Bowl Dimensions: 12″ × 11″
  • Sink Depth: 9″
  • Minimum Cabinet Size: 18″
  • Sink Specification PDF
  • Warranty Information