These are highly versatile and inexpensive machines which many offices find indispensable. Among the many common uses are business cards and ID cards, rebate coupons, document covers, outdoor signs, construction plans and specifications which tend to get soiled or exposed to the weather. Two throat sizes are available: small, usually 4" and large, usually 13". We recommend that, for the small difference in price, our customers should choose the larger throat. Because these machines are so versatile new uses for them are always coming up and it is unreasonable to limit one's possibilities by choosing a small throat. We also carry three different quality levels. The choice of which one will depend on what the machine will be used for. The lowest level is adequate for most simple work. These machines are designed for occasional use with lightweight plastics. Heavy-duty machines, the middle level, are capable of continuous service and can handle thicker plastics. Finally, the top level or photographers machine is designed for better quality laminating consistency. It has extra heating rollers and a more even heat distribution. This doesn't make much difference for most services like business cards or outdoor signs, but if the subject is a color photo or photocopy of say someone's face, the slight distortion in the adhesive could seriously change the picture. For such service, customers should consider purchasing the top of the line machine.