Fifteen. Only ten of those are BPs though. I have two T8s too. I'm thinking about buying it if it hasn't sold by this weekend (when I'm able to pick it up). I guess in the future it'll give me plenty of room if i have quite a few clutches at once. I do need a good 41qt rack too. But with being in nursing school, that might have to wait until hatchlings sell and hopefully fund that. I HATE building rat racks. And the one I recently build from scratch (as in no blue print from online since is 105qt tubs) has been a PITA to get right (some of that is due to not having very good tools). I feel like a snake rack is harder to build and that intimidates me.