Information on GNC in Manchester, PA 17345 Outlet Note Regular Brands GNC Pennsylvania Manchester 328106 Rating 4.7 based on 97 votes Address 4135 North George Street, ext. Manchester, PA 17345 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby GNC Outlet GNC Outlet - Avondale GNC Outlet - Ashland GNC Outlet - Audubon GNC Outlet - Allentown People Also Viewed