Universal Base Plate
Universal Base Plate
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This Universal Base Plate from Birds Choice can be used to mount any flat bottomed Purple Martin House on all of the Coates 12' mounting poles. Attaches with 4 screws.

Outer diameter of flange is 1-1/2" and inner diameter of flange is 1-3/8". Dimensions: 6" x 6"

This part comes attached to all Coates Purple Martin houses.