Heavy duty storm and solid door closer is designed for use on outswinging wood or metal doors up to 1-3/4″ thick. Torsion bar and large air controlled 1-1/2″ tube combine to provide twice the latching power of a standard duty closer. For use as a replacement closer or in new installations. Fully adjustable door closing speed and permanently lubricated to extend operating life. Supplied with handy “hold-open” washer. All season protection provided by durable black or aluminum finish.