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| Manufacturer | Backer Rod Manufacturing |
| Description | ULTRA BLOCK is a pre-engineered, patented, flexible textile fiberglass roll material with a fiberglass matt facing, containing approximately 30% by weight unexpanded vermiculite that is used as part of mechanical expansion and construction joint fire stopping systems. |
| Unit | bag |
| Size | .75" x 6" |
| Color | yellow |
| Category | Backer Rod |
| Item Number | IEDA |