Designed for low profile scales and process applications. Come in two common sizes LE- large envelop or SE- small envelop. Most models in the market are now NTEP approved for capacities from 1000 to 10,000 lb as they are very often used in the shipping industry for freight scales. Non- NTEP are also available and range from 250 to 20,000 lb. Most are alloy of stainless steel material.