The heavy duty fan or fixture mount kits, part of the nVent CADDY line of fasteners from nVent ERICO are ideal for supporting up to 35/50 lb with a single brace or 70/90 lb with a double brace. Included in each mounting kit are two fixture mount stabilizer clips (FMSBC1) and the innovative nVent CADDY speed link universal support system, which serves as the means of support to meet the requirements of the NEC. The 2-1/8 in electrical box is pre-mounted in the center of the brace and features three open knockouts for quick and easy installation. The installed box position is also fully adjustable over 16 in to provide a customizable installation.