Up for sale is a used Petmate Pet Porter. I did not get exact measurements but I placed a yardstick so you can get an idea. I believe they measure these by outer dimensions so this would be the 32 inch model. There looks to be at least 30 inches in length on the inside. This is a cash sale for pick up in Oakley. If interested, reply to this post with your phone number and I'll give you a call to make arrangements for you to take a look. Thx.