I'm selling my Zone VI print flattener, which I found to be a useful darkroom device. I would put prints in the flattener right after taking them off the drying screens. Ultimately, I'd give them a treatment in a dry mount press but this Zone VI device would take the excess curl out of the prints and make them easier to work with. Its footprint is 11x14 and it's made of painted wood.
This device works with prints up to 11x14, which is the size of the print in the photo. The price is $35, shipped in the US, and I'll ship it as soon as I find a box it fits in.