Door and board carriers are sometimes called panel carriers, wall board carriers, plasterboard carriers, panel grips, or drywall carriers. They may also be called door or board lifters, but these are actually different tools, not designed for carrying.
They’re used to make it easier to lift, move and carry large and/or heavy sheets of materials, such as plasterboard and doors, by hand. They come in two basic designs: carriers which clamp the edge of a sheet, and carriers which support a sheet from below.
They come in a variety of designs, sizes, and specifications, so different carriers can be used with different materials. They provide a gripping point to hold and transport sheets that would usually be difficult to hold.