The Ingenuity Doorway 48W Series Baby and Pet Gate fits openings 28.5-48" and is 36" tall (including arch); please measure opening prior to purchase to ensure proper fit. Fits in doorways or hallways with easy no-drill pressure mount system to help prevent damage; fits at top or bottom of stairs, on walls or flat banisters, with included hardware kit (required for stair use) 17.25" wide door can swing both ways; door conveniently stays open when engaged more than 90 degrees; gate door opened less than 90 degrees will close automatically and auto-closes at less than 90; stopper prevents door from swinging over top of stairs Door locks securely to keep children & pets contained with narrowly spaced bars; adults can open door with one hand by engaging the latch and pulling up on the door IMPORTANT NOTES: When installing the gate, do not cut the red zip that is tightened around the swing door until instructed to do so in the Instruction Manual. This gate will not fit openings 32-33", 36-37", 40-41", 44-45"