I got one of these when my first set of ducks were still young (2016) and installed it into a panel in their duck house . I had to cut /drill a hole into the edge between coop door and frame to fit the cord through . I had to use an extension cord with it and it worked out fine . I never saw the ducks huddle against it but it did make it just a little warmer in there on nights when temps were in the single digits F it gave me peace of mind knowing that if they were cold they could move closer to it .
