
The full-length commercial ventilation system in a manual configuration — geared hand-crank ridge and side vents running roughly 80% of the roof. Same heavy-gauge frame and sash as the automatic system.
Full-length venting, manual configuration.
The same full-length commercial ventilation system — ridge and side vents running roughly 80% of the roof length — in a hand-cranked manual configuration. Heavy-gauge frame and weather-sealed sash sized for production houses, without the motors and controls. Upgrade to automatic any time.
Available on Multi-Span, High Tunnel, and Light Dep structures.