Roll-top plastic security carts have fixed-height shelves and a long door that rolls up to allow full access to the carts' shelves and rolls down to conceal the carts' contents. They are also called tambour trucks. The carts' door can be locked to prevent unauthorized access. The carts have a tapered floor with large drain openings that prevent liquids from collecting in the carts. They are made from plastic, which is lighter than metal and will not rust or dent. These carts can hold large volumes of bulk materials such as linens, towels, or trash and are often used in hospitality and catering operations. They can also be used for transporting food, beverages, sporting equipment, tools, and other items.

The adjustable shelves on these metal security carts can be set at a range of heights or removed to accommodate objects of different sizes. The carts have solid walls and doors, and the carts' contents cannot be seen when the doors are closed, which helps deter theft and tampering. The doors have latches or hasps that can be locked with a padlock or other locking device to secure the carts' contents.

The fixed-height shelves on these metal security carts are welded in place and cannot be moved. The carts have solid walls and doors, and the carts' contents cannot be seen when the doors are closed, which helps deter theft and tampering. The doors have latches or hasps that can be locked with a padlock or other locking device to secure the carts' contents.