A Variety of window and door types can be used in the buildings. Window sizes from 1×7, 2×7, 3×3, 3×4… windows that slide horizontal or vertical, may be insulated and with tinted glass, or just a cased opening for your own special window or storefront glass. Metal building doors can be single or double width man doors with panic device, door closers to pull door closed, special knobs, lever locks, dead bolts, bronze or white color finish, and also overhead door sizes are custom from 8×8 to 20×20 and even larger for tractors or aircraft. Garage and overhead doors can be manual, chain hoist, electric operated, and with windows, insulated, and even have metal skin or panels on the inside. Roll up drum type, sectional, mini storage, sliding door systems, and heavy curtain type doors available. Lots of options, lots of accessories to choose from!