Sun-Tek Skylights has designed a multiple tubular system called The Spyder. The Spyder skylight system can deliver natural light to different rooms within the home through one roof opening. As many as four tubes can be attached to the curb-mounted skylight and frame. The Spyder is made of polycarbonate and the curb mount design allows for installation on any roof type. The curb mount unit provides a leak-proof cap and is finished off with an aluminum trim ring.