Metal Zinc’s Rails and Clips connect the register boxes (boots) to the supporting structure.
Makita Guide Rail Quick Fix Clamp Set 199826-6 - Tradie Republic
Garvin Industries BB-1/2 Die Cast Zinc EMT Back to Back Box
Rails, Drives, Angles and Straps Archives - Metal Zinc
Everbilt 5/32 in. Zinc-Plated Crimping Retaining Ring 807608 - The
Boot Rail, C-Rail and S-Clip - Metal Zinc
3.5T Steel Winch Hook - Zinc Plated — Winchshop
C-Rail Rollco
C Channel Steel Rail - China Strut Channel, Unistrut Channel
WEBI Coat Rack Wall Mounted,8 Coat Hooks for Hanging
AF230-00 - BRAKE RETAINING C CLIP 2 Pk