Constructed of 3/4 inch kiln dried cedar with all the quality that Woodlink puts into every product. Built to the specifications required for nesting flickers, both northern and yellow shafted, with a 2.5 inch round entrance. Box is packed with sawdust allowing the flicker to simulate the excavating of a new cavity. Easy open door allows for annual maintanence and cleaning. Includes mounting instructions and data sheet on nesting flickers. 20″H x 8.75″W x 11″D Weight: 9 lbs.