Heavy-duty push button door lock is more difficult (if not impossible) for a bird to open vs. a simple latch. The button cannot be reached from inside the cage so the bird has no chance of opening the door and flying out. Windbell lock at the top of the cage is an additional safety feature. The door cannot be opened without flipping the windbell lock up and out of the way of the door. Even if the pet owner forgets to slide the latch of the push button lock over to re-lock it the bird still cannot get out of the cage because it is impossible for the bird to flip up the windbell lock while pushing the front door open and climbing out of the cage. The push button lock and windbell lock make this cage 99.9% escape proof. Slide out bottom grille Top and bottom pull out drawer for easy cleaning. Grille clip is another safety feature - it latches up and over the handle on the pull out bottom grille to lock it in place. This prevents larger and more aggressive birds from kicking out or pushi Overall Height with stand: 66 34 Wire Spacing 9 Gauge Wire Wrought iron construction with powder coated finish 2 Wood perches Lead and zinc free cages are non-toxic and bird safe Cage top playpen Rounded corner seed guards to help contain messes 4 Stainless steel cups Rubber caster will not break like a plastic wheel. Built in the U.S.A.