The company says the locking mechanism on the ladders can jam, posing a serious risk to consumers.

The Illinois-based company said owners of the ladders being recalled should stop using them immediately and register at www.wernerco.com/recalls to begin the process for a full refund. Once owners have properly disposed of their ladders per Werner’s instructions, the company said it will issue a check for a full refund.

Werner has received 18 reports of falls due to the locking mechanism jamming and not fully locking into place, resulting in 14 injuries such as bruising, lacerations, head injuries, and fractures to the wrist, leg, and ribs, the CPSC said.