Clip frame quite often used in shops ,resteraunts, hotels, offices, workshops,ect. to be notice boards ! ***size: A4/A3/A2/A1/A0,frame with thickness 32mm,also can be customized to be any size.***color: silver, can be coated to be colorful.***lockable snap frame is also available!***we even have plastic snap frames. welcom to contact us for further information! Snap frame