Will it hold a dog that has broken out of wire crates?

The frame is thickened steel tube with reinforced welds, and both doors use bolt-style latches. That is built for dogs that have bent or chewed through lighter wire crates. No crate is escape-proof, so test the latches with your dog inside before leaving it alone.

Can I move it between rooms and outside?

Yes. The four heavy-duty casters let you roll it from room to room or onto a patio. Lock the casters once it is in place so a pushing dog cannot move it.

How big is it, and what size dog fits?

Assembled it is about 37 inches long, 25.6 inches wide and 30.7 inches tall. That suits medium to large dogs that can stand and turn inside. Measure your dog's standing height and length before buying.

Does the tray catch accidents and spills?

The slide-out plastic tray covers the entire floor and has raised edges to keep liquid off your floor. Slide it out for cleaning. It is plastic, so heavy chewers may scratch it.

What does the perforated top do?

It lets air through to keep the dog cooler in summer, stops jumpers from getting out, and gives a flat surface to rest a leash, treats or a water bowl. It is not a load-bearing roof, so do not stand or sit on it.

Is it good for indoor housebreaking?

Yes. The full-floor tray contains accidents and the kennel can stay in the bedroom or living room. It is heavy and takes floor space, so plan where it will sit before assembly.