Universal Boiler Works, Inc. (UBW), a leading manufacturer of Balanced Flow Watertube Boilers.

• See also:
• Masterformat 2004
• 23 52 00 - Heating Boilers
• 23 52 16 - Condensing Boilers
• 23 52 19 - Pulse Combustion Boilers
• 23 52 23 - Cast-Iron Boilers
• 23 52 33 - Water-Tube Boilers
• 23 52 39 - Fire-Tube Boilers
• Masterformat 1995
• 15510 - Heating Boilers and Accessories