Available Sizes 20 x 35cms (Supplied in sets only) sheets only in box 20 x 35cms (Supplied in sets only) in plastic jackets with hanging hooks 35 x 50cms. sheets only in box 35 x 50cms in plastic jacket with hanging hooks 35 x 50cms complete with hard backing aluminium angle frame and hanging hooks 50 x 70cms sheets only 50 x 70cms complete with hard backing aluminium angle frame and hanging hooks.