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It appears to be stainless steel. If it is inside a cabinet , it needs room around to vent . I believe the instructions said four inches on each side . We have ours in a cabinet and it does get really hot . We do have venting room . Hope that helps .
Sorry, there was a problem. Please try again later.Hello, Harry! This model can be installed in a cabinet with the compatible trim kit NN-TK81KC, the requirements for the cabinet opening are 23 5⁄8” x 15 9⁄16” x 21”. For proper operation, the oven must have sufficient air flow. Allow 6 inches (15 cm) of space on the top of the oven, 4 inches (10 cm) at back and 2 inches (5 cm) on both sides. If one side of the oven is placed flush to a wall, the other side or top must not be blocked.
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