The Moffitt Low Profile Ventilator recently underwent a major design change that produced unmatched capacity levels. This new design also considered the installers and produced the simplest installation in the business. Installation is as simple as putting caulk on top of a curb, selecting your start point and just start snapping sections together. In addition to the new modular construction, consideration was also placed on the damper operating linkage. The new Moffitt design allows for access to all operating damper linkage from the roof. Old designs and those of others require a costly lift device and clear access from below the roof line.