S&K Expansion Kit for Fountain Rack with 8 Arching Arms key pin set 875" diameter entry sits on

875" diameter entry sits on the narrower side of the base

The item is compatible with the Trio Purple Martin Castle Safety System or the Nature House Mini-Castle Safety System

while the shape of the unit directs warmer air upward and away from the nest

Dimensions: 20

while providing these migratory birds lasting roosting options

S&K Expansion Kit for Fountain Rack with 8 Arching Arms key pin set 875" diameter entry sits onAdd space for an additional assortment of gourds on your existing fountain rack using this S&K Expansion Kit for Fountain Rack with 8 Arching Arms. Set of four brackets, 8 arching arms, and included hardware lets you add up to 8 additional gourds to your martin house rack. This expansion kit is specifically designed to work with the S&K Fountain Rack, which slides over 1. 9" outer diameter pulley system poles (not included). Each of the 8 arms on the