Receptacle With Aja Mounting Box | For Reverse Service (Generator Applications) | To Seal Conduits in Vertical Runs; to Minimize the Passage of Gases and Vapors and Prevent the Passage of Flames From One Portion of the Electrical System to Another Through the Conduit; 25 Pct Conductor Fill; Explosion Proof, Dust-Ignition Proof; Supplied | Use Through Knockout to Connect Box to Conduit Coupling; Use With a Locknut to Connect Two Boxes Side by Side or Back to Back; Use With a Locknut to Connect Fixture Housings in Continuous Runs; Rigid Conduit Threads (Nps)Furbay Electric Supp