When ordering natural machine grade, please understand that there are dramatic variations in clarity and transparency between sheets. Some sheets allow very little light through with no clarity. Others are simply window grade that has been downgraded due to scratches or clarity qualification failure, and appear clear. If you are looking for a particular style or clarity of machine grade, please state so in the Order Comments box in your order. We will do the best we can to accommodate all requests. Requests might be limited to current stock, availability, and other factors.