EVERY ARCH IS INDIVIDUALLY CONSTRUCTED , THE FRAME IS BUILD WITH ALUMINUM PIPE 2 INCH DIAMETER . IT PROVIDES AREA FOR MOUNTING ACCESSORIES. THE INSTALLATION OF FOUR BREAK AWAY PINS WILL FOLD THE ARCH TO THE FRONT OR BACK DEPENDING ON CUSTOMER EXPECIPICATIONS .THE TOP FOLDS AND UNFOLDS WITH REMOVAL OF QUICK RELEASE PINS AND IT CAN BE MADE IN ANY COLOR. POWDER COATED,MOUNTING HARDWARE AND BACKING PLATES INCLUDED.