155AT Through Roof Base

Through roof base which allows for the installation of complete concealed air terminal by one technician from above the roof. This base requires an adequately supported 1" PVC conduit sleeve through the roof. Roof seal is achieved via an EPDM seal and solvent welded PVC pipe cap. For use where air terminals are connected directly to building steel. For cables through No. 506. Can be used with copper or aluminum air terminals.