This security shutter is a Furnish Rolling Grilles, series 250 as manufactured by “USP” complete with curtain, hood, guides, counterbalance, and options as specified.


  • Manual lift
  • Chain hoist using gear reduction and galvanized hand chain
  • Internal or external industrial motors
  • Hand crank using gear reduction and removable hand crank


Details About This Roll Up Door

The curtain construction shall be USP brick pattern or straight pattern with all exposed metal to be galvanized or aluminum on this commercial garage door. The continuous horizontal solid rods 2 1/4 inches o.c. are to be covered with tubular spacers. The spacer is to be vinyl. The links are to be aluminum. The rods are to be bright basic or galvanized wire. The end links are to be furnished to prevent grille from exiting guides. Each curtain shall receive a bottom bar to maintain the grille alignment and posture.

The bottom bar shall consist of two steel shop primed angles a minimum of 1/8 inch thick.

The spring counterbalance is to be housed in a steel pipe of the appropriate diameter and wall thickness as to support the curtain. Deflection shall be limited to a maximum of .03 inch per foot of the door width. The springs are to consist of helical torsion types designed to meet a 25 percent load factor. The safety factor allows for a safe operation, ease of use, and longer spring life. The springs are to be grease packed and anchored, using a cast iron anchor, to a cold rolled steel inner shaft. The spring tension shall be fully adjustable from outside of the end bracket plate. To ensure smooth operation, the end bracket plates shall contain sealed ball bearings to minimize the wear of the pipe shaft.

The end bracket plates shall consist of steel plate no less than 3/16 inch thick. The bracket plates are to house the pipe shaft and counterbalance the assembly. The shaft is attached to a plate by sealed ball bearings that are fitted onto a plate.

The guides shall consist of structural steel angles a minimum of 3/16 inch thick. The guide depth shall be of a length adequate to provide for proper slat penetration and specified windloading.

The hoods shall consist of a minimum of number 24 U.S. gauge steel. The hoods are designed to protect and house counterbalance assembly. To prevent hood sag intermediate supports shall be furnished as required.

The locking for manual and chain operated doors are to be slidebolts mounted on the bottom bar with provisions for the padlocks. The gearing within motors are to be self-locking.

Finish all non-galvanized surfaces shall receive a shop coat of rust inhibiting primer. Field painting is not included in this section.

Installation to be by USP or by an authorized dealer.


  • XT 2000 Operating System
  • Sloping bottom bar
  • Kick plate
  • Security panel
  • Bottom bar with rubber astragal
  • Designer Hood
  • Remote control*
  • Safety edge*
  • Timer to close*

* Available only with motorized units.

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