Octagon Crop Storage Louvres provide efficient control of airflow. Our louvres are designed to provide efficient airflow for all sizesof crop stores. The frame and each blade is manufactured from 16swg Zintec. The blades are mounted on coated pins, which move in modern bearings. The blades are driven from the centre to ensure positive blade closure. Included is 25mm Styrofoam insulation fixed to each blade, and the surrounding louvre frame. Each blade edge seals positively against a silicon bubble strip, fitted to the previous metalwork. Blade ends include both brush cleaning strip and rubber sealing strip. The louvre metal work is powder coated before assembly. Louvres manufactured in galvanised steel to the same design are now available.