I actually used this enclosure to make a feral cat house that will be kept inside a finished shed, so no contact with the elements. I added 1" rigid foam (also blocks 3 side vents), plus a thin layer of reflective radiant barrier over that and it came out amazing! Added a heat source and the inside is nice and toasty and ready for winter. The box itself was super easy to assemble and the quality really great, everything lined up and it looks really nice and feels solid. I'm so happy with this purchase and hope our feral girl loves it too.