Welcome to Prime Storage in Mechanicsburg, PA! Our self-storage facility offers storage units from 5âx5â to 10âx30â, including climate-controlled storage and RV storage. Our live-in manager and friendly staff will help make move-in easy. We offer a full line of boxes and packing supplies for sale. Moving something large or heavy? Use our complimentary carts and dollies. Enjoy the convenience of 24-hour access to your unit and payment online or through our secure dropbox. Visit our convenient location on E Trindle Rd, or reserve one of our storage units online!