Steel & Stainless Steel

Type 18 Small Flat SlatSteel & Stainless Steel Counter Doors

counter_bronzeR&S Steel and Stainless Steel Doors combine strength and durability with compact design and neat appearance. Although primarily utilized as a closure on counter openings, these doors may also be used on openings large enough to provide walk-thru or drive-thru access. Counter doors can be modified in construction to meet stainless steel service door requirements up to 16 feet wide, 10 feet high at a maximum of 144 square feet.

Specifications

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Part 1 General

1.01 Summary
A. Counter doors excluding design, construction and preparation of openings; finish or field painting; access panels; electrical wiring, conduit, wire, fuses and disconnect switches

Part 2 Products

2.01 Materials

A. Manufacturer: R & S Manufacturing, model N ___, model SN ___ (for stainless)
B. Mounting: Face of wall or between-jamb
C. Operation: Push-up to 14′ wide and awning crank on larger sizes is standard (awning crank should be considered when doors are to be operated over a deep counter or over 7′ high). Chain hoist or motor operation are optional.
D. Curtain: Interlocking type 18 flat slats are roll formed from (galvanized steel) (stainless steel) coil. Endlocks are riveted to slats to maintain curtain alignment. Bottom of curtain is reinforced by a (single angle) (tubular) footpiece of material matching slats, with astragal.
E. Guides: Box shape guides are formed from (steel) (stainless steel).
F. Brackets: Steel plate brackets are bolted to guides to support curtain and barrel and provide mounting for hood.
G. Barrel: Steel pipe houses torsion spring assembly and supports curtain with a maximum deflection of .03 inch per foot of width. Torsion springs are mounted on a continuous cold rolled steel shaft, adjustable by a tension wheel outside or inside one bracket.
H. Hood: Formed from 24 gage (galvanized steel ) (stainless steel) sheet, reinforced with top and bottom flanges to limit deflection.
I. Locking: Slidebolt locks on single angle footpiece and cylinder lock on optional tubular footpiece

2.02 Finish
A. Galvanized steel slats and hoods are pre-finished with a baked on grey polyester primer before forming. Steel footpiece, guides and brackets receive one coat of rust inhibiting grey primer. Exposed stainless steel provided with #4 finish.

Part 3 Execution

3.01 Installation
A. Counter doors are to be installed by an R & S authorized representative in accordance with R & S installation instructions

Steel & Stainless Steel Counter Door Options

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  • Increased Windload Capacity: curtain designs to withstand windloads exceeding 20PSF
  • High Cycle Construction: designs to provide up to 150,000 operating cycles or maximum possible in design
  • Perforated Slats: 3/64″ diameter holes on 5/64″ staggered centers in type 25 slats provide 30% open area for ventilation and visibility throughout the curtain
  • Vision Lites: single or multiple 3″ wide cutouts, open for ventilation or covered with acrylic
  • Intermediate Grille: partial grille curtain connecting type 30 slats above and below
  • Sloped or Stepped Footpiece: for special sill conditions
  • Cylinder Locks: on footpiece or guide
  • Galvanized Finish: on footpiece, guides, brackets and barrel
  • Safety Bearing: This unique safety device functions as both a bearing and inertia brake for motorized service doors and grilles. The safety bearing is designed to prevent the curtain from free-falling if there is damage to or failure of the motor operator, drive chain or spring assembly. If a malfunction occurs and the downward speed increases to an unsafe rate, the inertia brake absorbs the added energy and safely stops the load.
  • Powdercoat Finish: a durable and decorative finish for steel or aluminum surfaces. It provides longer life and requires less maintenance than a standard finish. Powder coating is available in a variety of colors for use on many products. Consult factory for color selection, applications and limitations.
  • Tubular Motor Operator: motors completely contained within the barrel can be provided for counter doors up to 84 square feet in limited usage applications. Only the manual crank override is visible outside the bracket. The units are available in 115 volt/single phase with constant contact one button or keyswitch control. They can also be provided with a low voltage controller when options such as a reversing edge or timer are required.

Steel & Stainless Steel Counter Door Model Designations

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By Method of Operation – Face of Wall Mount

Steel Counter Door Stainless Steel Counter Door
NFP - Push-Up
NFA - Awning Crank
NFC - Chain
NFM - Motor
SNFP - Push-Up
SNFA - Awning Crank
SNFC - Chain
SNFM - Motor

For Between-Jamb Mount, change letter ‘F’ to ‘J’.

Steel & Stainless Steel Counter Door Guide & Footpiece Details

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Face of Wall Mounting Guide Detail Tubular Footpiece Detail
counter_s_guideF counter_s_ftT
Between Jamb Mounting Guide Detail Angle Footpiece Detail
counter_s_guideT counter_s_fp

Steel & Stainless Steel Counter Door Clearance Requirements

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Area Headroom Tension Side Room Power Side Room
Push-up Crank
A 12″ 4 1/4″ 2 1/4″ 4 1/4″
B 14″ 4 1/4″ 2 1/4″ 4 1/4″
C 12″ 4 1/4″ 4 1/4″
D Consult Factory
1) Reduce Side room by 1/4″ for Between-Jamb Mount
2) Reduce Tension Side Room by 2″ with inside tension

clearance_ss_steelCounter