Hi! I am upgrading my Chamelons lighting so I wanted to sell my t8 fixture. I figured that it could be used for other reptiles than Chamelons so still wanted to post it on here it is a 20" and an 18' reptisun t8 can fit in here or the bulb they say on the packaging. I have only used it for about 6 months so it is in great condition. I paid $50 so asking $35 let me know if you are interested, I accept paypal. US shipping only.