I am looking for linear guide rails to finish my tank base. they need to be 30", but retractable, like they would be in a drawer.
I am going to make the base "doors" slide up with a motor, rather than open outwards like traditional cabinets. Home depot carries them, but the largest size is 24".
Any ideas?

Try a cabinet maker supplier like Morrison Supply, 5645 Peachtree Rd. , Chamblee, 770 455 8244. Many slides available, may stock stainless. Standard slides much cheaper than the Depot.

thanks scook! That should be close to work...I'll call em tommorow :)