This is a handmade bat house made from Cedar. I have added kerf cut to the front & back of the box so the bats have areas to hold on to. These are made from 3/4 thick cedar & have a 16 rear mounting board. The house itself is 12 long X 6 wide & 4 1/2 high. They weigh in at just over 3 pounds. If you want more than one please message me & I will give you a shipping cost for multiple units. There are no refunds on these items as these are handmade to order. This is made in Texas by a US combat veteran. 4 Bat Houses