AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier

Appears to be brand new, instructions haven’t even been opened so that’s always a good sign. The box is missing some of the styrofoam so didn’t want to put it as new. Sorry I have no idea how this thing hooks up to test it out, but I really didn’t want to due to the newness of it. Please see photos and box will be shipped inside another box for safety. Thanks

eBay