So I got the large All Access Organizer in yesterday. Bigger than what I thought. It should hold 3-5 goyles easily.
It is very roughly 15" tall, 20" wide, and 17" deep. I say roughly because it tapers a little from the top to the bottom.
Here's the link for the "cage" http://www.amazon.com/gp/product/B00BEUDXHW?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
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Today I used a soldering iron to cut two holes in the back and put in 2 black aluminum louvers.
On the back they have tabs which you can bend back over the hole to hold them in place.
It worked well, but if you have a 2" hole saw it would work much faster. I don't, so had to use what I had on hand. http://www.ventmyhouse.com/products/2%22-Round-Black-Aluminum-Louver-with-Insect-Screen-and-4-Aluminum-Tabs--%28Priced-Per-Bag-of-6%29.--Item%23--2%22-RBLT%252d100.html
The front window slides up and then you can drop it forward. To replace it, you put it up and slide it down again. I don't need the geckos pushing up on the lightweight window and accidentally having it open, so I used a window screen clip with a wide thumbhold to secure it. http://www.amazon.com/gp/product/B00FMYPEGY?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
To "unlock" twist to the side.
To "lock," just twist it down. I chose white so I could see the lock easily.