A

Pneumatic, magnetic and motorized door operators in the nature of door openers and closers, and door opening and closing systems, comprised of structural parts, structural components, and electronic controls therefor

Non-metal doors and non-metal door systems, comprised of non-metal door panels, structural components, and non-metal door structural parts, namely, hinges and tracks

Installation, maintenance, and repair of doors, door panels, door operators and door systems, including parts, accessories, components, controls, and control accessories therefor