Well, there is an alternative to the MaxxAir window louvers which are no longer available.
Two years ago Wayne Pavalko started this forum page
on FiberglassRV. Note that Wayne’s Rvent louvers are completely different from the MaxxAir window louvers.
JonC and I were able to acquire Rvent louvers for our Casita
trailers from Wayne. I posted a bit more info on the process in this post earlier
this year. Jon also posted Wayne’s email address on the same forum page (two posts prior to mine). My post includes links to two youtube type videos that describe the different Rvent louvers.
Note that Wayne’s day-job keeps him pretty busy and per his original posting, he developed the initial louver for a neighbor using his at-hime 3D printer. Earlier this year, I attended a rally
with Jon and Jon reported that Wayne did make a second louver for him after Jon sold
his original Casita
. At the same rally
, another of my friends also reported that Wayne did make louvers for his trailer after I used Wayne’s templates to measure his windows