Fully assembled MSS12R One Story addition for Nature House's famous Purple Martin House Safety Systerm (Model MSS12R). This product ships with two screws securing the floor sections for security in transit. Installation requires that these two screws be removed. Then the story is simply bolted to the top of the existing story. The ceiling is to be replaced with its original screws and the installation is complete!
Everything is in place for quick installation.
Dry Nest Subfloors and Winter Door Stops are also included.