Drop in terriarium vent for dart frogs etc

i have alot of dart frog tanks and wanted a more customisable drop in vent system so i designed this.

the frame slips inbetween the two parts of glass on the top. then the vent piece drops in place. you can remove top and bottom layers and adjust grid infill to your desired hole size. 

i personally adjusted and printed two sets to fit into one 45x45 glass tank

i will upload mre pictures and also a print file soon

i have also adjusted this to go into my polycarbonate exo terra tank lids as well as my rubs