I had Plexiglas cut to fit inside the grooves in my screen door. I just slightly bow it to pop it into the channel. I only have the bottom section in now so my dogs won't rip the screen and the top can still allow air in.
2013 Silverado 2500HD LTZ CC 6.6L Duramax Diesel
2014 Sunset Trail SF270BH
Holly & Buster, mini Dachshunds
2016: 1 trip, 3 nights in 1 state, 316 miles
2015: 5 trips, 18 nights in 3 states, 2707 miles
2014: 5 trips, 14 nights in 3 states, 2426 miles