The Post Mount Wren House from Nature Products USA is made using Cedar for the body and Recycled Poly Lumber for the roof and wren-shaped portal. Its has a 1-1/8" portal opening and is very easy to clean. This house is very well vented and allows for drainage. Made in the USA! 

Specifications 

Outside Dimensions: 8" W X 11.25" H X 7" D 

Hole Diameter 1-1/8" 

Hole Above Floor: 3.5" 

Construction: Cedar, Recycled Poly Lumber 

Birds that would use this Bird House: Wrens 

Origin Country: Made in the USA!