3/8-16 bar joist truss hangers are used to hang electrical, fire suppression, plumbing and HVAC fixtures in open web bar joist truss systems. Garvin Industries’ bar joist truss hangers efficiently use space and balance the load evenly on bar joist while delivering a fast, strong and safe solution for mechanical attachment in both the upper and lower chords of the truss. There are no special tools needed for installation, making it fast and easy.