What is the maximum weight the oven support surface must support?
For single ovens, the support surface must support a minimum of 150 pounds. For double ovens, the support surface must support 290 pounds. The platform must be a minimum 3/4" thick plywood and must be solid, level, and flush with the bottom of the cabinet cutout.
From the official Bosch HBL503 500 Series Single Wall Oven manual, page 4
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