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CSI MasterFormat™ Sub-Division List |
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| CSI Code | Short Description | Extended Description |
| 15500 | Heat-Generation Equipment |
| 15510 | Heating Boilers and Accessories | Cast - Iron Boilers Condensing Boilers Finned Water - Tube Boilers Firebox Heating Boilers Flexible Water - Tube Boilers Pulse Combustion Boilers Scotch Marine Boilers Steel Water - Tube Boilers |
| 15520 | Feedwater Equipment | Boiler Feed Water Pumps Deaerators Packaged Deaerator and Feedwater Pump |
| 15530 | Furnace | Electric - Resistance Furnaces Fuel - Fired Furnaces |
| 15540 | Fuel-Fired Heater | Fuel - Fired Duct Heaters Fuel - Fired Radiant Heaters Fuel - Fired Unit Heaters |
| 15550 | Breechings, Chimneys and Stack | Draft Control Devices Fabricated Breechings and Accessories Fabricated Stacks Gas Vents Insulated Sectional Chimneys |
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