Omcan has seven different models of manual meat slicers with a 14" blade: you can choose a light duty, medium duty, or heavy duty model. Each model can do some cheese slicing, but the amount of cheese slicing will vary depending on the model. 

Each of these commercial meat slicers is covered with a one year parts and labour warranty. To know the difference between the various models, see the bullet points below, or check out the spec sheets for a full list of features on the model you're interested in.