Hey everyone I am making my C&C cage with two levels and I want to use dryer vent tubing to connect the top and bottom because it is enclosed and very pliable. My question is what diameter to get and where can you find the vinyl white ones? I know they are a fire hazard so a lot of big stores do not sell them anymore. I do not want to get the metal ones because I am afraid the metal could tear and cut my hedgie's feet. What are my options?