Aluminum Excluder Entrance Door Trio House

If you've enlarged your Trio house Compartments from the standard 6 x 6 inch floors to the roomier 6 x 12 that martins prefer, the excluder entrance door with it's revolutionary double-peg design will help to prevent the nesting of starlings. The replacement door fits Trio Castle, Mini-Castle, Musselman, Grandpa, Grandma, and Wade. 

• Made of aluminum 
• Made in the USA