1.5" diameter entrance hole, and the sloped roof overhangs slightly for protection from rain.
The front panel opens up for nest checks and seasonal cleaning, and a brass latch at the base keeps it securely closed. The entrance is placed high on the front panel, creating a deep home for your feathered friends, and the 0.75" thick, cedar body keeps the unit nicely insulated.
A gap on the base allows water to drain, while additional gaps at the top help ventilate the unit. Two predrilled holes on the back and included screws.