This functional birdhouse was inspired by a classic, English Conservatory style greenhouse. Squared corner columns, floor-to-ceiling windows, a removable back wall for easy cleaning and a 1. 25" opening easily accommodate wrens, finches, chickadees, nuthatches and titmice. The house is constructed of exterior grade ply-board, pine shingles for the roof and poly-resin details. The finish is a non-toxic, outdoor paint. Item Dimensions: 8? H X 11? W X 9? D.