Designed with a 2in entrance hole, filled with wood shavings so the woodpecker thinks he is excavating a hole. Features side opening for easy cleaning and roof hinges to make it easy to refill with shavings next season. Made entirely out of 7/8in thick, western red cedar and are naturally well insulated. Features an easy clean out, side opening with predator guard and grooves on the inside below the entrance for young birds leaving the box. Assembled with steel screws. They have an easy clean out and provide good ventilation. The houses make functional garden accents and are great gifts. Made with pride in Michigan.