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The Glynn-Johnson 81 Series Overhead Door Holder Surface Mounted provide rugged, heavy-duty door control. The jointed-arm design provides the most effective stop mechanism available. The shock absorber bracket is surface mounted, usually with sex bolts. The jamb bracket is mounted to the stop of the frame, so a minimum of door and frame preparation is required.

GJ80 Catalogue

The Surface Mounted Glynn-Johnson 90 Series Overhead Door Holder are the most rugged models available for heavy-duty applications. The channel is surface-mounted to the door, most often with barrel nuts, and the jamb bracket is surface mounted to the jamb, requiring minimal door and frame preparation.

GJ90 Catalogue