Thermo™ I-Joist Header, 16 x 17 in Size
- Capping off the return air run
- Precision die cut and scored for easy installation!
- Pre-cut and sorted to fit easily between joists
- Specially-sized headers are cut fit i-joist construction
- Fire-resistant
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Catalog
https://assets.unilogcorp.com/267/ITEM/DOC/Thermo_16018_Catalog.pdf