It was mostly unused and has been in storage. Non-smoking environment, no pets. No box. No instruction manual. Humidifying filter not used. This is a humidifying air purifier equipped with Sharp's unique "Plasmacluster 7000" air purification technology. It features an "Electrostatic HEPA filter" that collects particles as small as 0.3μm and is designed to resist clogging due to its electrostatic properties. An "Ag+ ion cartridge," easily attached to the tank cap, disinfects bacteria that cause slime and odors, allowing for humidification with clean water. Type: Humidifying Air Purifier; Filter Type: HEPA; Maximum Applicable Floor Area (Air Purification): 23 tatami mats; Filter Life: 10 years; Pollen Mode: Yes; Deodorizing Function: Yes; PM2.5 Compatible: Yes Size/Weight Width x Height x Depth: 399 x 615 x 230 mm Weight: 7.7 kg