Hilltop Grand Martin House w/Round Entries, 16 Room gourds This triple compartment

This triple compartment

Screw-on cap makes it easy when needing to perform nest changes and cleaning

Mounting: attach to pole (not included)

Their sturdy

Hilltop Grand Martin House w/Round Entries, 16 Room gourds This triple compartmentProvide a safe and reliable dwelling for lovely purple martins in your backyard with this fantastic Hilltop 16 Room Trendsetter Grand Purple Martin House with Round Entries and 3" square pole. White, aluminum housing unit has 16 separate compartments for martin families. Offset, 2" diameter entry holes allow martins to easily access the interior while eliminating porch disputes. Each compartment measures 11" wide and 6" deep to lend ample protection