The NB-1900N's strengths:

• This machine has a wide feed opening that's 17.5 inches across. This makes it perfect for documents that are wide such as posters and blueprints. Photographs can also be laminated with this device.

• The NB-1900N has four rollers so all of your items will be laminated perfectly and free of bubbles, heat marks, and wrinkles. The machine is fast enough to laminate up to 1.7 feet of material per minute.

• You can easily control this machine's temperature thanks to digital controls that are located right on the front of it. There's also an LED display that's easy to read. The machine fully heats up in about five minutes.

• Both hot and cold lamination is possible so you can laminate just about everything - even items that could potentially be damaged by heat. The rollers are automatically cooled down after a hot setting is used thanks to a cooling system. This reduces wear and tear on the device.

• The NB-1900N is compatible with pouches up to 10 mil thick. It is also able to handle mounting boards as long as they're not thicker than 80 mil.

And its weaknesses:

• The NB-1900N doesn't have a reverse mode. Therefore, you'll need to be careful when using it so you don't wind up with a jammed pouch.

• This laminator lacks an automatic shut-off feature so there's a chance it could overheat or run into other problems. Make sure you turn it off when you're finished using it.

• Although this laminator looks great, it's a bit on the large size so you'll have to free up a fair amount of room for it. It's just over 29 inches wide and has a 12-inch depth.

• Finally, the NB-1900N lacks an exit tray. Depending on the temperature setting, your documents will be hot when they come out of the machine, so be careful when handling them.

Conclusion:

The Royal Sovereign NB-1900N produces beautiful, high-quality lamination and the fact that it can accept mounting boards places it ahead of its competition. Your documents will be free of imperfections and they'll be laminated rather quickly so you can move on to another project. Plus, it's always get when a machine is capable of cold lamination. However, you'll have to weigh this product's strengths against its weaknesses, especially the absence of a reverse mode and an automatic shut-off feature. It is also a rather large laminator, so if you don't have a lot of free space, this might not be the right product for you. However, if you're comfortable with this machine's weaknesses and you want a machine that beautifully laminates and can handle mounting boards, the NB-1900N would be a good choice.