Based in Orrville, Ohio since 1901, Will-Burt, working under an ISO 9001 Certified Quality System is the world leader in the manufacture and sale of pneumatic telescoping masts and accessories.

• See also:
• Masterformat 2004
• 23 54 00 - Furnaces
• 23 54 13 - Electric-Resistance Furnaces
• 23 54 16 - Fuel-Fired Furnaces
• 23 55 00 - Fuel-Fired Heaters
• 23 55 13 - Fuel-Fired Duct Heaters
• 23 55 23 - Gas-Fired Radiant Heaters
• 23 55 33 - Fuel-Fired Unit Heaters
• 23 82 00 - Convection Heating and Cooling Units
• 23 82 16 - Air Coils
• 23 82 19 - Fan Coil Units
• 23 82 23 - Unit Ventilators
• 23 82 26 - Induction Units
• 23 82 33 - Convectors
• 23 82 36 - Finned-Tube Radiation Heaters
• 23 82 39 - Unit Heaters
• Masterformat 1995
• 15530 - Furnaces
• 15540 - Fuel-Fired Heaters
• 15760 - Terminal Heating and Cooling Units