Listed CKV hoods have the advantage of arriving to your installation with the mark of a third party testing and certification listing. Thus you have the guarantee of the manufacture that they are manufacturing their product per their listing and also that the laboratory is certifying that product is being inspected to insure the product is being manufacture in accordance with its listing and the current standard.
Listed CKV hoods also have the advantage that the hood is only required to exhaust the minimum amount of exhaust air that its listing dictates and not the minimum amount the prevailing code dictates.
