TOO HEAVY!!!! ...I bought one thinking it was good for my situation BUT... used it once and sent it back asap, its a folding mechanizm that utilizes Large Cotter pins to lock everything in place through holes on the channels ...great for a studio setting but not for everyday OMB setups IMO. It's flimsy when unassembled but strong when put together....watch your fingers with those middle Sissor braces too Ouch ! Go try one in person before you buy.