THERMO PLATE STEAK PLATE LOT OF 10 PLATES WITH INSERTS made in USA September 3, 2023 thermo Tags: inserts, made, plate, plates, steak, thermo THERMO PLATE – LOT OF 10 PLATES WITH INSERTS. Service Ideas Inc – made in USA. Thick stainless steel insert plates have typical utensil marks. Insert measures approx 10.75 inch x 6.5 inch from the outside of the rim.