3M™ Dual Laminate Refill Cartridge DL951 combined with the 3M™ Laminating System LS950 provides instant front and back side lamination which is great for presentation materials, three-ring binder sheets, schedules and more. It uses no electricity, there is no warm-up waiting, and no heat or irritating odours. This makes it ideal for documents which may be sensitive to heat. Professional document finishing right at your work station!