These custom built nest boxes are built by none other than the distinguished OPA! Pics and all the info can be seen on my website. You can either contact me through my site, or pm Opa directly here on BYC. Opa built me a 3 nest box, and I just love it. He's a very skilled carpenter, and it shows in his craftsmanship. And believe me, these boxes are so well worth every penny they cost.