SEi 724ALC Aluminum 24" Ratchet Binder Locking Channel Sei storage racks can be mounted on trailer bulkheads, cab protectors, headach boxes, rolling tarp trailers, side kit trailers or used in the garage or shop Two piece heavy gauge aluminum construction 24" locking channel Laser cut for a perfect fit, fast & easy installation The perfect ratchet binder storage solution for rolling tarp and side kit trailers