Our second-generation transport boxes include new screw-in vents that protect the filters. This feature is especially useful for kestrel boxes. Own one of our first-generation boxes and want to upgrade to the new vent style?
 
You've got two options: if you're into DIY, you'll need to increase the size of the vent holes on your box by filing them. If you're able to do this DIY method, you can order a set of vents only here.
 
If you're not a DIY'er, this retrofit vent kit is for you. You'll receive two brand new sides for your first-generation box with the vents pre-installed. Just unscrew your sides and swap for the new ones.
 
Vent sets for kestrel, medium and large transport boxes include four 2.5" screw-in vents with filters and new ABS plastic box sides. Vent sets for extra-large and double transport boxes come with six 2.5" screw-in vents with filters and new ABS plastic box sides.