Perfectly sized for Bluebirds, this house has a 1-9/16" entrance hole; raised predator guard surrounding the entrance hole keeps Bluebirds safe and secure Includes an easy-open side door for quick access and simple cleaning Constructed from recycled poly lumber that withstands the elements and is won’t split, crack or fade No assembly required; this bird house comes ready to mount and is instantly ready for Bluebirds to move in Dimensions are 7 x 8 x 13 - perfect for providing Bluebirds with a comfortable place to call home