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Why you’ll love it

RestaurantSupply.com is your trusted source for John Boos underbar sink units.

  • Authorized John Boos dealer, ensuring genuine commercial restaurant equipment and manufacturer support
  • Fast shipping available on in-stock John Boos UBS4-2172-2D12-X underbar sink units
  • Competitive pricing backed by a 30-day price match guarantee
Additional Question? Ask an Expert

John Boos UBS4-2172-2D12-X 72 Inch Underbar Sink Unit with Four Bowls

John Boos  |  MFG #: UBS4-2172-2D12-X  |  Item #: 551392
Item: #551392

Technical details
Manufacturer John Boos
Model Number UBS4-2172-2D12-X
Manufacturer Part # UBS4-2172-2D12-X
Sink Compartments (4)
Bowl Depth (rim - drain) 10"
Depth (front - back) OA 20" - 21"
Bowl Size 10" X 14" Front-to-back
Top Stainless Series 300 Series
Drainboards Drainboards On Left & Right
Splash 3"
Construction Stainless Steel Top, Front, Ends & Legs
Width (side - side) OA 67" - 72"
Height 32.5"
Width 72"
Depth 21"
Weight 109 lbs
NSF Yes
CSA-Sanitation Yes

About this item

Product Details

The John Boos UBS4-2172-2D12-X Underbar Sink Unit is a commercial-grade stainless steel sink designed for efficient workspace management in hospitality and foodservice environments. This four-compartment underbar sink features a durable 300 series stainless steel construction, measuring 72 inches in width, 21 inches in depth, and 32-1/2 inches in height. Each of the four bowls measures 10 inches by 14 inches, with a front-to-back depth of 10 inches, offering ample capacity for washing and prep tasks. The unit includes 12-inch drainboards on both sides with removable perforated inserts, facilitating water drainage and easy cleaning. Equipped with a 3-inch backsplash, dual removable splash mount faucet holes, and included 1-1/2-inch drains with overflow pipes, this model provides a comprehensive plumbing configuration suitable for busy commercial kitchens and bar stations.

Top John Boos UBS4-2172-2D12-X Features

This underbar sink combines robust stainless steel construction with functional design to meet the demands of professional foodservice environments. Its multiple compartments enable simultaneous washing, rinsing, and sanitation, streamlining workflow in bars, cafeterias, or catering setups. The unit’s removable splash mounts and perforated drainboard inserts support ease of maintenance and flexibility in setup, while the stainless steel legs and side bracing ensure stability. Its generous overall size allows integration into various underbar configurations and ensures durability for high-traffic use.

  • Functionality: Four 10" W x 14" D x 10" deep compartments for operational flexibility
  • Durability traits: Crafted from high-grade 300 series stainless steel for corrosion resistance and longevity
  • Ease of maintenance: Removable splash mounts and perforated drain inserts simplify cleaning routines
  • Real-world fit: Designed for underbar, bar-back, or prep station integration in busy kitchens
  • Workflow benefit: Large overall size with drainboards helps optimize washing and prep flow

Ideal for commercial bar and prep areas requiring durable, spacious underbar sink solutions

John Boos UBS4-2172-2D12-X Technical Specs

The John Boos UBS4-2172-2D12-X features a self-contained design operating with a standard plumbing connection, including 1-1/2" drains and overflow stand pipes. It is constructed primarily from stainless steel with a 300 series finish, ensuring high corrosion and sanitation standards. The unit weighs approximately 109 pounds, with overall dimensions of 72 inches in width, 21 inches in depth, and 32-1/2 inches in height, fitting seamlessly into commercial underbar configurations. The sink’s bowls are 10 inches in depth with a 10-inch front-to-back measurement, suitable for heavy-duty washing tasks. The drainboards are positioned on either side, each 12 inches wide, supporting efficient water runoff and cleanup. Designed for moderate workload operations, it is NSF and CSA-sanitation compliant, with a splash height of 3 inches. The stainless steel legs feature adjustable bullet feet for leveling in various floor conditions, and the entire construction is designed for ease of disassembly and cleaning.

  • Electrical & plumbing: Compatible with standard 1-1/2" drain piping, no electrical requirements
  • Construction & finish: 300 series stainless steel top, front, ends & legs with antimicrobial surface
  • Dimensions & weight: Width 72", Depth 21", Height 32.5", Weight 109 lbs
  • Food safety & sanitation: Made from food-safe stainless steel, NSF and CSA sanitation approved
  • Installation considerations: Adequate clearance for plumbing, level floor for adjustable feet, water-tight drain connections

What is a commercial underbar sink unit?

A commercial underbar sink unit is a specialized stainless steel sink designed for bar and prep stations within foodservice environments. It provides multiple wash compartments, drainboards, and plumbing connectivity to facilitate efficient washing, rinsing, and sanitation processes. The John Boos UBS4-2172-2D12-X underbar sink features four spacious compartments, durable construction, and integrated drainage, making it suitable for high-traffic bar areas, cafeterias, or catering service setups. Its robust design supports frequent use, ergonomic functionality, and easy maintenance, ensuring compliance with sanitation standards while enhancing operational flow in busy commercial kitchens.

Top commercial underbar sinks for hospitality environments

Designed for moderate use in professional kitchens, the John Boos UBS4-2172-2D12-X offers a durable, spacious, and hygienic underbar sink solution. Its high-quality stainless steel construction with multiple compartments supports efficient workflow and easy sanitation, making it ideal for bar service, prep stations, and catering environments. This model from John Boos ensures consistent performance in busy hospitality settings, optimized for maintenance and longevity.

  • Operation Type — suited for moderate-volume bar and prep stations
  • Kitchen Setting — ideal for commercial cafes, restaurants, and catering
  • Foodservice Category — efficient for underbar, prep, and warewashing
  • Workload Qualifier — supports steady throughput during peak hours
  • Use Case — best for multiple wash tasks in quick-service environments

Why Choose John Boos UBS4-2172-2D12-X

John Boos UBS4-2172-2D12-X stands out for its heavy-duty stainless steel construction, spacious compartments, and comprehensive plumbing setup. Its corrosion-resistant build, removable splash mounts, and sizable drainboards enhance sanitation and workflow efficiency in demanding environments. The unit’s robust design minimizes downtime and maintenance, making it a reliable choice over competing underbar sinks with limited capacity or less durable materials.

  • Compact footprint with integrated drainboards for efficient workspace layout
  • Heavy-duty stainless steel ensures corrosion resistance and long-term durability
  • Removable splash mounts and perforated inserts simplify cleaning routines
  • Designed for easy installation in moderate to busy foodservice operations
  • Enhanced stability with adjustable stainless steel bullet feet for uneven floors

Certifications

CSA Sanitation NSF2 logo

CSA Sanitation NSF2

This item meets or exceeds the requirements of NSF/ANSI 2 as determined by the Canadian Standards Association (CSA) and is certified for the U.S. market.

NSF Listed logo

NSF Listed

The item meets the standards imposed by NSF International. These standards relate to health, public safety and the environment.

Certifications

Customer reviews

John Boos UBS4-2172-2D12-X Underbar Sink Unit 4-compartment 72"W X 21"D X 32-1/2"H Overall Size
John Boos

John Boos UBS4-2172-2D12-X 72 Inch Underbar Sink Unit with Four Bowls

$2,307.47

John Boos, UBS4-2172-2D12-X, Underbar Sink Unit, 4-compartment, 72"W x 21"D x 32-1/2"H overall size, (4) 10"W x 14" front-to-back x 10" deep compartments, 12" drainboard on left and right with removable perforated insert, 3"H backsplash, (2) sets of removable splash mount faucet holes with 4" centers, includes 1-1/2" drains & overflow stand pipes (PB-OVF-BS), 18/300 stainless steel construction, stainless steel legs & side bracing, adjustable stainless steel bullet feet, NSF, (weights are subject to additional packaging)