Abstract: A lock is provided to releasably secure a first member to a second member. The lock has two brackets, one attached to the first member and the other attached to the second member. The first is a locking slotted bracket and the second is a locking pin bracket. The locking pin bracket has pins with heads that extend outwardly from the locking pin bracket. The locking slotted bracket has a T-shape to receive the pins, and a lock lever that snaps into a locking position between the pin heads in the slot to hold the pins in the slot. The heads can be removed by deflecting the lock lever and sliding the heads of the pins out of the T-shaped slot. The lock lever is biased and flexible so that it rests in a locked condition. For longer or heavier structures or where position is important, a slotted bracket with a keyhole-shaped slot may be provided. The keyhole-shaped slot receives a head of a pin which will slide into a wider slot and into an undercut where it is retained.