Attention: 1. Do not cut the tie that holds the door to the child gate before finish installing. 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.When use for cylindrical stairs need to buy U type bolt, the U type bolt is not included in our box. 6.This product will not necessarily prevent all accidents, please never leave child unattended."