Siemens model 8492126B. Used. Weight: 76.5 lbs. Margins: .5 in all around, 1/4 in thick. Base: 8 in. l x 7.5 in. w. Body: 7 in. l x 6.5 in. w 2.25 in. h. Holes are 1.5 in from sides along the long dimension, 1.25 in from sides along the shorter dimension.