Loading... Please wait...This horizontal bat excluder fits over the entrance where bats are coming into your home or attic. Just place it over the last entrance and exit for the bats, and they will be able to leave the house, but won't be able to re-enter, because they will not be able to find the entrance hole through the flaps of plastic. Made in the USA by Barn in the Sticks. The base of the excluder is 12" by 12".