Thermo™ Thermo-Headers™ 16018 Fire Resistant I-Joist Header, 16 in L x 17 in W
Thermo™ Thermo-Headers™ I-Joist Header, Fire Resistant, 16 in Length, 17 in Width
Made from ThermoPan, 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.