Made from Thermo-Pan, our headers are the answer to capping off the return air run. Headers come in four popular sizes to fit both standard and I-Joist construction. 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
Thermo Thermo-Headers Pan Header, Fire Resistant I-Joist Non Self Supporting, 19 in Length, 16 in Width, Domestic