This cover will let the fresh air in and keep bugs and rain out. 3D printed and made from PETG, they have been tested for 2 years on a Hiker Trailer. The net is replaceable using a snap ring design inside if the bug net would get damaged. The covers come as a set of 2. This doesn't include the 90* elbow. Recommended accessory would be the 90* elbow from Valterra.    
These are print-on-demand. Current lead time is 1-2 weeks.
 
Contact us if you are interested in a set.