Store your belongings at Extra Space Storage on 550 Allendale Rd in King of Prussia, PA today! Our large selection of storage units, climate controlled units, all-hours access, elevator access, exceptional security, electronic gate access and helpful staff make finding the right self storage unit for you easy and hassle-free. Experience the professionalism, cleanliness, and commitment to exceptional customer service that Extra Space Storage is known for. Contact us today to reserve your storage unit or set up a time to stop by and take a tour of our facility!