Ventilation grid

This is a Ventilation grid. its made for a ventliation hole that is 7 cm in height and around 49 cm i length. So the outside height is about 8,5 cm, and the outside lenth is 50 cm, so it covers the hole.

I my apartment there is an old one, that was broken and it was real hard to get a replacement for it, due to its width and height. So i made a replica instead. i have uploade the full lenght version as well, for those tha can print that (50 cm) and a 3 part, (gluing together).

You need supports!