Set of 8 porch dividers. Use to prevent dominant older birds from taking over the entire floor (porch domination) of the purple martin house. Note: 8 are required for M12K and MSS12R houses. 12 are required for the TM12. 24 are required for the PMC24. Gives martins more privacy. Fits all Nature House Brand houses. Dimensions are 4" x 4.75".
