Although I've never used
WadeRV (
RV Products) just a little east of Tampa, they seem to have a good reputation among iRV2 users. I don't know if they do carpet installation in a slideout, but, they do custom entry area rugs and step covers. I'm planning to visit them next month to look at samples. They produce the entry area rugs to custom fit the space and require a two business day turnaround.
Take care,
Stu