Support needed for outer edge only. Weather stripping recommended.

Also recommend using the “Magnet Cartridge for Cat Door” to keep Cat Door in correct position and prevent wind from blowing it open. PRINT 2, one for door and one for threshold.

If you use the magnet cartridges, make sure thinner sides of Magnet Cartridges are facing each other so magnets can be as close as possible to each other.

PETG Recommended.

0.2 Layer Height