Lawson 7700 Hurricane Lawson 7700 Hurricane. Block and tackle balance for easy vent removal. Bottom sill latch eliminates possible accessibility conflict. Extruded aluminum snap-on glazing bead provides a strong, clean and neat appearance. Tubular horizontal rails reduce bowing. Single plane weathering eliminates gaps that permit air leakage. Fin-seal provides highly efficient weather-stripping. Recessed jamb installation holes so screw heads won’t interfere with balance travel. Vent lift rail provides ease of Read more about Lawson 7700 Hurricane Guard[…]