Beacon Dock Door Seals are designed to keep the weather elements out, assist in keeping energy costs down and also aids as an anti-theft protection barrier. Overhead Dock Door Seal is available to fit all standard over head door openings measuring 8' x 8', 8' x 10', 9' x 9', 9' x 10' and 10' x 10'. Standard door seal projections 10" or 20". Special door seal projections available. Special angled door seals are available to accommodate for driveway incline or declines. Dock Shelter standard projections are 18", 24", 30" or 36". Special projections are available.