Wings reduce the sash opening area to increase face velocity at the 16" sash stop position from 60 fpm to 100 fpm, and 17" depth.

Hinged with detents to maintain open position for loading and closed position for normal operation. Wings attach to sides of sash opening. Kit includes set of 2 wings and mounting hardware. For use with Protector Echo Benchtop Filtered Fume Hoods.