Don-Jo
Heavy Duty Overhead Door Holder, Don-Jo 3212
The Don-Jo 3212 is a Heavy Duty Overhead Door Holder/Stop providing a durable Hold-Open mechanism. This unit allows for selective Hold-Open or Stop function.
The Hold-Open tension is adjusted incrementally by turning the nut at the end of the 1/2 inch diameter stainless steel bar. A simple 90º rotation of the roller mechanism disables Hold-Open, allowing the unit to serve as a shock-absorbing stop.
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