Heavy Duty Desk Clamp. Desk Thickness up to 2.68inch. Utilize with AWM-P75. The AWM-FH dual plate desk clamp is a part of the Atdec modular family. It is recommended for all 29.5 post solutions and other configurations with extra heavy screens. The dual plate design provides additional stability when it's required. Suitable for desks up to 2.68 in thickness.