We made the mistake of purchasing the one piece screens. My wife was able to install a heavy duty zipper in the middle, that zips from the bottom up. These are available pre installed from several manufacturers, and are the ones I would recommend.

The installation included installing some "D" rings into which straps and Velcro tabs hold things into place.

Some people object to the screens, stating that it blocks a lot of the airflow through the windows. There has been some alternative discussion, of using equestrian fly screens, to protect the horse's eyes and ears from bugs and airborne sawdust, and leaving the windows open.

Gard

the problem is, i don't have bars! it's a 96 sooner. it's either let them ride almost enclosed with a small window open or buy window screens to let the air come through. i just didn't know if one screen was better than the other, or if anyone had any good or bad experiences with a particluar type. thanks for the replies so far

gard: we treated/preserved our aluminum trailer floor using the instructions you had posted a while back. it turned out great!!! and i feel so much better knowing it is protected! thanks for all the useful info! =]

DustFlyin,

I have window screens on mine, as it's a '94 logan gn. I have never had issues with them. I have more issues with the tourist going 100 mph up in the sierras and riding my butt acting like I can go faster down a steep grade, then they pass me on a really blind curve and a 15 mph curve to boot! Anyways,... I bought the Pro. choice, but were not very good, make sure you measure your window openings to see if the screens they sell in catalogs online will fit. I had to have mine special made due to the trailer being older and bigger windows. Here's the link below of the folks that made mine, really nice people....

http://www.ciwtrailers.com

Glad it worked out for you. Hope you enjoy many more years with your trailer

Gard

Our Sundowner has large drop windows all the way around and NO bars or screens.  I had ordered the ones from Sundowner for $70 bucks each, (will not do that again).  I sent them back and bought 3 PROFESSIONAL's CHOICE screens for under $20 bucks each and they was easy to install and work GREAT!

It took me about 10 mins per window to install them.  We have 1 horse that tries to stick his nose out the edge of the screen but he can't do it.  The only thing with the Sundowner is they have larger windows (40" wide inside frame) than most trailers and we have about a 1/2" gap or so around the egde.  And for $20. buck each we bought 2 extras to incase.

My Logan trailer has bars on all windows,  But it also comes with a screen for each. The screen is kinda like a fitted sheet. The four corners fit over the edge of the bars.  These come from the factory with the trailer.  See photo below.

I realize you don't have bars. So to answer your question the screens letting in enough air. They seem to let plenty of air into the trailer. The Logan comes with drop down windows Head and Butt. With the same bars and screens on both side of the trailer.  In the winter I leave the window up and just open the slide vents enough.  In the summer when it's 100*, I drop all head and butt windows and leave the bars and screens closed.  If your trailer has smaller bus type butt windows, maybe the screens will not let enough air in.  If you have slats on the butt side and drops on the head, You shoyld have plent of air movement.  Also you are in Florida. You have way more humidity than I do. So even when it's 100* here, the humidity is only 7-10%. That will affect how much air movement you need.

Here you can see the windows dropped, but the bars and screens up