Does not appear to have been used. Includes: (4) Pool Filters. PLEASE SEE PHOTOS FOR WHAT IS INCLUDED. Please do NOT ASSUME an item is included if it is not in the photo. Cryspool CP-07034 Pool Filter 4X50 sq. Ft 4 Pack For Select Filtration Systems. Dollarhog has partnered with some of the Nation’s largest retailers and distributors to aggressively liquidate consumer merchandise. That philosophy inspired family-owned Dollarhog. We appreciate your business! All merchandise is tested prior to listing unless it is sealed in the factory package. This will include powering on the unit and checking all the major functions. You will find condition and testing notes in the item description. This helps our buyers know EXACTLY what they are getting. We check and respond to our messages often. We are here for you. We check these messages often throughout the day, 5 days a week, and it is our goal to respond as quickly as possible. Many carriers will not deliver to a PO Box and this can delay your order. (4) Pool Filters. Per the CPSC, failure to adhere to applicable UL safety standards. May pose an unreasonable risk to consumers of fire and serious injury or death; and that compliance with the relevant UL standards significantly reduces the risk of injuries and deaths from micromobility device fires.