Yes, that's the one I have, just couldn't remember the dimensions. It will just fit 4 standard 1020 nursery trays. I have two of those and several of the smaller, single tray mats. What's odd is that 4 single mats use less power than one large mat. (The single ones use 17W each and the one big one uses 107. Weird.) I put a layer of styrofoam underneath the mats to help conserve heat.
