TCC CLAWED CEILING BRACKETS and ACCESSORIES, from Space Age Electronics, feature a one-piece design with 18 ga galvanized arms and mounting plates. Countersunk 8-32 mounting holes accommodate self-aligning screws to secure 4"-square devices without danger of cross threading. Keyhole screw slots offer easy and precise mounting, while clawed arms stabilize units during device installation. Appliance Box is suitable for mounting strobes and speakers from most manufacturers. Pkg/5.