These fit perfectly and they really make stacking the enclosures incredibly easy!!

I keep snakes so I added silicone caulk around the bottom, drilled vents in the sides and back, and added child locks. I also sealed the screen top as arboreal snakes can hurt themselves on it; I would have paid for a solid top option in a heartbeat! I will likely add insulation to the back outside as well as it's not thick enough to hold enough heat.

You need an extra kit to stack them. It's not expensive but you do have to order it separately.

Couldn’t be happier

Just like the tank…the snap N stack pieces fall right in place and make it so you can stack!