This is for a 3 pizza size oven in our family restaurant.|||You don't; unless you can get some instructions from the manufacturer that will show how to do this, and maintain the oven's listing. No listing means there is no way to prove the oven is safe; no proof of safety, no occupancy permit, no insurance. The cost of a "Field Evaluation" by one of the OSHA Approved NRTLs (Nationally Recognized Testing Laboratories) is probably 1/3 to 1/2 the cost of a new oven; it hardly seems worth it, even assuming it can be done for that type of oven. Some tests can only be done in a lab. Could be a BIG problem.|||I am not sure that it cn be done.It could be dangerous .....

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