The Stairway Special Gate (Model SS-30) is our maximum safety gate designed for the top of a stairway-- it's great for all areas! Features include a latch system that baffles toddlers yet allows one hand operation for adults, and an optional stop bracket prevents opening over a stairway for greater safety. The Stairway Special will mount at angles up to 30 degrees allowing location of a stud when mounting on drywall. The gate is constructed of aluminum which is lighter weight than steel and rustproof. A powder-coated finish provides a long lasting, easy-to-clean surface and is available in White and Black. If you're using this gate outdoors, we recommend the purchasing a stainless steel hardware pack (sold separately). Gate Dimensions: Gate width is adjustable 27 inches- 42 ½ inches Height 29 ½ inches Bar Spacing 2 ½ inches 10 ½ inches extension (Model BX1) is available for openings 42 ½ inches to 53 inches 21 ¾ inches extension (Model BX2) is available for openings 42 ½ inches to 64 inches