I had Derrick Bell make me a 1x12 baltic birch cab for my Marshall 50th Anniversary 1 watt heads. It measures 20x20x10. A perfect fit for the smaller Marshall heads. He did an amazing job with vintage style tolex, gold piping, and large check grill cloth. I put a Celestion G12H30 in it and it sounds incredible. If you're interested in getting any type of cab made contact Derrick at [email protected]. I can't recommend him enough.