I was in Lowes here in Augusta and they had 2 sizes on clearance. When I get finished taking the kids to the dentist this am I will stop and check and get some info for you. I wanna say they had one the size you are wanting.
If you hit Lowes also go by the Post Office and get a "moving kit" which will have a 10% off coupon. You need to apply for the coupon online and then it is emailed to you a few days later. Home Depot will take it as well. Will help with a few $s off.