Base door and board carriers are used to make lifting and carrying sheet material easier for one person, by working as an extension to your arm.
Handle
The handle of a base door or board carrier should be easy to hold. You use the handle to lift and carry any sheet materials while your free hand can be used to support the sheet or move any obstacles as you move.
Support lip
A ledge at the bottom of the carrier supports the material to be carried. The ledge is usually lined with rubber, increasing the frictional grip of the board.
The ledge usually incorporates a lip to prevent the board or sheet from falling off. A carrier with a narrow, lipped ledge will not be designed to support thicker materials. The product specification will give you the maximum board thickness that the carrier can accommodate.