The bricks in MY version of this heater measure 9" by 4.5" by 2.25".
The "large" white object, below the heater, is a concrete slab. You'll need one that's SIMILAR in size, shape and depth.
All images are screen shots, using SketchUp to view the 3D model of the heater. Using that program, you will be able to "rotate" the image and thus be able to view the heater from every angle and distance imaginable, including the ability to ZOOM in to see details.
If you have questions about any of these images, feel free to contact me.
Jan 14, 2011