The centre brace clip is a multipurpose accessory to the 1500 standard (green corner) system. It is designed first and foremost to allow bracing as well as cross bracing of stretched pieces to ensure they are taught. We recommend bracing any length of 1500 standard stretchers that exceeds 24". It can also be used as joiner allowing the assembly of two cut bars to make custom size lengths of virtually any size. Finally it can be used as a hanger. Once attached to the wall through the nail hole in the centre of the clip the slot running on the inside of the 1500 stretcher will engage to the clip, keeping the piece snug and secure to the wall.