I'm looking for a manufactured simple door catch for a bird house. I've attached a photo of the type of thing I'm after. This one is plastic. I'd prefer something metal but I can't find anything like this anywhere. I've looked at Rockler and Woodcraft with no success. The McMaster-Carr site has a lot of stuff but, unless I'm not calling it by the correct name, they didn't have it either. Any ideas who might sell something like this?