? Extra wide tall sturdy metal walk through pet gate with 4 pressured adjustment bolts for stairs/doorways, single-hand easy walk-through no tools required install for baby/dogs/cats.The tension narrow gate height is 40.55"" made for children 6-36 months, also can be used for small, medium to large dogs. Adding security for your baby or pet! Product Feature: Not need drilling, easy install. Automatic close indoor gates. Open from both 2 sides, never confuse and easy use. Box Components: 1 piece standard baby gate + 4 adjustable bolts + Installation manual+?corresponding size extension?. Attention: 1. Do not cut the tie that holds the door to the child gate before installing?important?. 2.There is a gap before you install it,this is not defective or bent.If you find that after you tight the bolts there is still a big gap ,pls continue tight the up two bolts until shorten the gap. 3.Leave a distance for the gap, normally you need to leave about 0.4'' for the gap,otherwise too tight so you can not open the gate 4.If you can not open the gate, pls loose the up two bolts. 5.This product will not necessarily prevent all accidents, please never leave child unattended.