Economy Grille Door Specifications

  1. Operation
    Grilles to be manual push-up operated; chain hoist operated using gear reduction and galvanized handchain; awning crank with removable arm; motor operated.
  2. Mounting
    To be inferior face mounted on a prepared opening; interior mounted between jambs on steel tubes.
  3. Work Not Included
    Opening preparation, access panels, finish or field painting, electrical wires, wiring, disconnect switches, mounting of controls, conduit are in scope of the work of other sections or trades.
  4. Curtains
    Curtains shall be silver or bronze plastic spacers over steel horizontal rods of 5/16″ diameter spaced 2″ on center. Vertical aluminum links are spaced 12″ on center. End licks are to be specially designed to lock into guides if excessive pressure is applied.
  5. Bottom Bar
    Bottom bar shall consist of two galvanized steel angles (aluminum or stainless steel) of equal weight and size, one on each side.
  6. Counterbalance Shaft
    Shall be band type tempered blue steel band spring mounted into steel housing rotating on steel bearings. *Optional: torsion spring pipe available.
  7. Brackets
    Brackets shall be stamped 12 gauge steel with reinforcing bends on all sides (welded to guides)
  8. Guides
    Guides shall be 2 1/2″ wide rolled formed 13 gauge steel U-channel with return lips.
  9. Hoods
    Hoods shall be not less than 24 gauge hot dipped galvanized steel (aluminum or stainless steel) formed to fit contour of end brackets in a neat manner and reinforced with stiffening bends at top and bottom edges. Hoods over 12′ shall be laterally reinforced with internal hood supports to prevent sagging.
  10. Locking
    Pinlocks welded to guides or slide bolts on bottom bar for manual push-up doors (Hand Chain Lock: locking bracket for handchain mounted on guide angle) (Integral Gearing: of motor operator to provide locking for door).
  11. Finish
    Non-galvanized surfaces (except bearings) shall be given one coat of factory applied rust inhibiting primer.

Optional Features

  1. Motor Operation
    To be integral assemblies with NEMA rated electrical components, Model, consisting of high torque motor, braking system, self-locking gearing, emergency chain operator with disconnect and electrical safety interlock, internal reversing magnetic controller, push-button station with open-close-top, internal pre-wiring. Motor may be removed for service without affecting emergency chain operation or limit switch settings.
  2. Safety Edge
    To be furnished on motor operated grilles, which upon contact with obstruction, are to stop and reverse the downward travel.
  3. Vision Lites
    (add) Can be provided in flat slat curtains. Furnish clear acrylic plastic sections over individual slat cutouts, each 6″ wide x 1-1/4″ high, in sets of eight cutouts, four slats high, two cutouts wide. (Perforated slats can be provided each 6″ wide x 1 1/4″ high or furnish 1/16″ diameter holes spaced 3/32″ on center).
  4. Weatherstripping
    (add) Doors to be fully weather-stripped at sill, hood and at guides (must use flat slat curtains.)
  5. Primed Finish
    (add) Galvanized slats shall have a baked-on coat of epoxy modified polyester.
  6. Cylinder Locks
    To be provided, engaging at both ends (and at center of opening) concealed within bottom bar, operable one side (both sides) (one side with thumb turn opposite side)
  7. Wicket Doors
    Furnish 2′-6″ x 6′-8″ hollow metal pass door within rolling door. Hollow metal pass door frame is to be hinged to rolling door guide to swing clear of opening when desired. Includes lockset and cane bolt.
  8. Sloped Bottom Bar
    (add) Furnish to suit the slope of the floor across the width of the opening, (Coil must be raised if sloped bottom bar is to clear the opening when the door is open).