I went to Wal Mart and bought the regular "baby" gate. It's got two frames that telescope in and out by means of a locking arm. It's adjustable from 24" to 53" wide and easily adjusts to any opening. It's like $9 and it has a plastic mesh in each frame. To keep the ferrets from climbing up the mesh, just take the box it comes in and cut out two pieces of card board (1/8" to 1/4" thick Plexiglas will also work but will cost more) that just fit in the frame recesses and cover over each mesh on the side the ferrets will be. Secure the cardboard covers into the frame with a strip of duct tape around the four edges of each frame. In only about 20 to 25 min you have a fully adjustable ferret gate with rubber edges that will fit almost any opening for less than $10. And if you turn the brown inside of the box cut-out to face out of the mesh, it doesn't look bad because the "brown" of the box almost matches the color of the frame. I've used two gates like these for over two years and the only way the ferrets have gotten past them is if a chair was too close to the gate and they used it as a launch pad to fly over. Hope this helps. -Weezzer [Posted in FML issue 3806]