Just pick these panels up in town off a house were the owners were trying to use them to heat a pool . They are sun works solector hot water panels they are 21 square feet per panel and are full copper inside with 1 inch manifolds and 3/8 risers and full glass front that is in awesome shape everything is pretty airtight with batch insulation and a metal back panel everthing is real solid . I bought 5 of them and only need 2 more for my current 6 panel array ,these are a lot better constructed than my current panels . Will sale 3 of them for 200 hundred a piece . Do to my I pad I can't post photos but can email any one interested I am located in southern Maine . There is a photo on Maine craigslist ( search solar ) I can help with setting up freight if required . Thanks jarrod any questions call or email 207 2812188