Extruded aluminum or fabricated steel penthouses for roof mounted intake, exhaust or pressure-relief systems. 7100 Models Extruded aluminum construction with 2", 4" or 6" deep blades; mitered or box corners.
High-performance models available with drainable blades.
All units are internally braced for strength and feature a fiberglass-insulated, removable roof for easy maintenance.
All units are internally braced for strength and feature a fiberglass-insulated, removable roof for easy maintenance.