Crystal Interior Ltd. Manufactures Single and Double Corners for Kitchen. Crystal Interior Ltd. Is an ISO 9001:2000 certified company. The Single and Double Corners for Kitchen are units fitted in front of the kitchen worktops ensuring the ease and convenience in carrying out all the kitchen related activities. The Single and Double Corners are made from `AISI-304` Stainless Steel with chromium plating. These corners are of width 225 mm, depth 225 mm and heights 180 and 430 mm.