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CSI MasterFormat Sub-Division List |
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| CSI Code | Short Description | Extended Description |
| 03500 | Cementitious Decks and Underlayment |
| 035000 | Cast Decks & Underlayment |
| 03510 | Cementitious Roof Deck | Cementitious Wood Fiber Plank Gypsum Concrete Roof Deck |
| 035100 | Cast Roof Decks |
| 03520 | Lightweight Concrete Roof Insulation | Composite Concrete and Insulation Lightweight Cellular Concrete Lightweight Insulating Concrete |
| 035200 | Lightweight Concrete Roof Insulation |
| 03530 | Concrete Topping |
| 035300 | Conrete Topping |
| 03540 | Cementitious Underlayment | Gypsum Underlayment Portland Cement Underlayment |
| 035400 | Cast Underlayment |
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