Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5324634.
I needed a way to vent the fumes/odors whenever I 3D printed with resins or ABS. Rather than using a window or a fan, I enclosed the printer in a small tent and connected to it a ventilation fan with an exhaust hose. The end of the hose connects to the 3D printed panel (snugly), and the fumes are directed outside. The panel slides into the side grooves, and the panel top is contoured to match the lip surface at the bottom of the sliding pet door.
3D printing the panel (with PLA) was cheaper and took less time than buying a wood panel or plexiglass/Lexan, drilling a hole on them, and securing an aluminum vent pipe thru the hole.
PetSafe is the manufacturer of the pet door, the size is for small dogs
The original CAD file is also included if you want to modify dimensions or add other features