From another forum:

As the sun sets on the dusty trail, we would like to thank all of the members of PNER for their friendship and support over the past years. We regret to inform you that due to the economics of today’s world, SilverLite Trailers will be closing down its factory and liquidating the entire remaining inventory effective immediately. We hope to see you in the future somewhere along the trail.
Best Regards
The Team at SilverLite Trailers