Why Use William Penn Self Storage? Customer Service: We are dedicated to customer service. We are committed to offering you exceptional value for your hard-earned money. Book and Pay Online: Our online software is easy to use and has all the features for a rich, interactive experience. All the Convenience and Security You Need: -Climate Control -24-hour Access -Digital Video Surveillance -Drive-up Access -Variety of Units Sizes Available -Great Customer Service -Online Bill Pay -Monthly Preventative Pest Control Service -Fire Suppression Sprinkler System.