Hi everyone. I am brand new to the forum and I am happy to be here with all of you. I love this website and forum, it is so informative! I have not yet purchased my guinea pig and I am trying to set things up for him/her first. I prefer to make my own cage using the modular shelving that is most popular and I want to do a 2 x 3 cage size. However I do not want to use Corofast as it does not seem as durable or sturdy to me. I much prefer to use a hard plastic bin/tray for the base of the cage, one that is already pre-made…(like Rubbermaid, etc). However, I checked all over the Internet and have been to all the major stores (Home Depot, Lowes, Walmart, etc) and I cannot find any plastic or even rubber bins that are big enough to fit a 2 x 3 cage size. The ones that are big enough are much much too deep for the little piggy. I am trying to find a bin/tray that is about 42”L x 28”W x between 4-6” Deep. The closest one I have found is a commercial cage (I know I know, commercial cage) at a size of 44” x 20” (it is the Morchioro Tommy 120 Cage at 6.1 square feet of interior room). Does anyone know anywhere either on the Internet or here in the Southern California area where I can find any plastic bins that will fit a 2x3 cage and work for the piggy? Or if I have to get the commercial cage mentioned, then is it easy to modify and put in a second level and ramp? Any and all help, advice, comments and tips are greatly appreciated. Thank you!