Bathroom Vanity Cabinet with Sink

This unit combines a storage cabinet with an integrated sink basin, designed for high‑traffic commercial restrooms where durability, ease of cleaning, and modular replacement are critical. The cabinet frame supports the sink load while providing accessible space for plumbing supplies and cleaning equipment.

Construction Materials

The cabinet body is manufactured from 16 mm marine‑grade plywood with a phenol‑formaldehyde resin coating, offering a water absorption rate below 0.4 % after 24 h immersion per ASTM D570. Optional upgrades include 1.2 mm stainless steel (grade 304) panels for corrosion‑resistant environments or solid surface composite (acrylic‑based) with a tensile strength of 45 MPa.

The sink basin is formed from vitreous china with a glaze hardness of 6 Mohs, providing resistance to chemical cleaners and impact. All joints are sealed with a silicone sealant rated for continuous water exposure up to 70 °C.

Dimensional Configurations

Standard overall widths are 600 mm, 750 mm, and 900 mm, with a depth of 460 mm (including sink overhang) and a height of 820 mm to meet ADA‑compliant knee clearance. The sink bowl nominally measures 350 mm × 250 mm × 150 mm (L × W × D) with a 32 mm drain outlet centered 100 mm from the rear edge.

Custom lengths can be specified in 50 mm increments, and the countertop thickness can be increased to 22 mm for additional load capacity. All dimensions are held to a tolerance of ±1 mm for length and width, and ±0.5 mm for height.

Load and Performance Characteristics

The countertop is designed to sustain a uniformly distributed load of 150 kg without exceeding a deflection of 2 mm, tested per ANSI Z124.1.2. The sink basin withstands a static load of 50 kg applied at the rim with no visible cracking after 10 000 cycles.

Water resistance is verified by a 48‑hour immersion test showing no delamination of the cabinet coating, and the sealant maintains flexibility down to −20 °C.

Installation Considerations

Mounting is achieved through four M8 × 60 mm stainless steel bolts anchored to the wall studs, providing a shear capacity of 2.5 kN per bolt. Plumbing connections use ½‑inch NPT flexible supply lines and a 32 mm PVC waste trap, allowing for easy disassembly during maintenance.

Clearance beneath the sink is 680 mm, meeting ADA knee‑space requirements, and the faucet deck includes pre‑drilled 35 mm holes for standard single‑handle mixers.

Applications in Commercial Facilities

Hotels benefit from the modular design, enabling rapid replacement of a damaged unit without disrupting adjacent fixtures. Hospitals appreciate the non‑porous vitreous china surface, which supports infection‑control protocols by resisting bacterial colonization. Office buildings value the clean lines and optional finishes that complement interior design schemes while maintaining low lifetime maintenance costs.

Quality Control and Testing

Each cabinet undergoes dimensional inspection using a CMM with a repeatability of 0.02 mm. Finish adhesion is evaluated by cross‑hatch tape test (ASTM D3359) requiring a rating of 5B. The assembled unit is subjected to a 10‑cycle hydraulic pressure test at 600 kPa to verify leak‑free performance of the sink and seals.

Final audit includes a visual inspection for surface defects under 500 lux illumination, with acceptance criteria limiting visible blemishes to none larger than 0.5 mm.

Customization Options

Clients may select from three finish categories: laminate (HPL) with abrasion resistance of 150 cycles, polyurethane coating with a gloss rating of 70 GU, or powder‑coated steel with a salt‑spray endurance of 500 hours (ASTM B117). Hardware options include soft‑close drawer hinges rated for 50 000 cycles and pull handles made of zinc‑alloy with a tensile strength of 250 MPa.

Sink configurations can be altered to a undermount style, a vessel bowl, or a integrated backsplash, each with corresponding faucet hole patterns (single, widespread, or wall‑mounted). Accessories such as internal lighting strips (LED, 12 V, 4 W / ft) and removable trays are available upon request.

Frequently Asked Questions

• Can dimensions be customized to match existing plumbing rough‑ins? – Yes, width and depth can be adjusted in 50 mm increments; provide the rough‑in dimensions for a precise quote.
• What information is required before quotation? – Project location, expected daily usage, preferred material, finish, and any required accessories.
• How is quality inspected for bulk orders? – Statistical sampling per ISO 2859‑1, with AQL 0.65 for major defects and 1.5 for minor defects.

For further details, contact our engineering team to discuss your specific requirements.