This Easy Step Gate is coming with 2 different extension options, this way you'll have many options where install. It comes with 4 bolts that are 5 inches long ,so you have about 8 more inches range to adjust on top of the gate long.

measurements are. 49 inches all Three gates together plus about 8 inches more with the bolts. about 31 inches tall. The extensions are 12 inches and 6 in. Feel free to text with any question