A slab door is a rectangular wood, fiberglass, or steel slab. It is the door without the frame, hinges, or hardware. A pre-hung door includes everything needed for installation and configuration. It's a door slab that has its own frame and hinges. You can buy pre-made frames for slab doors and they usually come with one or more slabs. The type of door you get depends on your needs and your budget. Slab doors are used for interior doors that don't need to be kept open often or have heavy use because they're made from thick material. They are also good for rooms where soundproofing is important such as recording studios or music practice spaces. Slab doors tend to look most impressive when painted or stained dark colors. They also work well in modern and contemporary homes as opposed to traditional styles which prefer framed doors. Pre-hung doors are used for exterior doors that will be opened and closed frequently. They include glass for transparancy and security. Pre-hung doors are also good for high traffic areas such as entrance ways or staircases. They require less maintenance than slab doors and can be bought already assembled. Pre-hung doors can be any size but standard sizes range from 36 inches to 42 inches wide and 72 inches to 76 inches tall. Smaller sizes are useful for decorating small spaces while larger ones can fit through large openings like doorsways or windows.