This sliding shower tub door is 59" wide by 56" high. Installation took me about an hour. The frame is black, it is very sleek and modern looking. The glass is 4mm tempered. The doors glide seamlessly both ways. It has a hidden wheel roller system which adds to the great look. This door allows for an opening of 55 inches to 59 inches in width, which really makes a world of difference in ease of installation. The door itself makes my bathroom look upgraded, but now I am forced to update my vanity and faucet to make it better. I would highly recommend this door.