FOAM INJECTED R-16.4
WEATHER BREAKER MODEL 175
Using the WEATHER BREAKER MODEL 175 means that overhead doors no longer need to be the weak link in an energy efficient building. Whether your facility is a cold storage warehouse or a heated manufacturing plant, maintaining designated temperature is vital. The more airtight and insulated a door is, the better it will control temperatures; and that means a savings in energy and money.
Additionally, the unique construction of the WEATHER BREAKER MODEL 175 results in benefits beyond a high insulation factor.
These doors offer:
- A solid feel to every section
- A quiet, smooth operation
- A very high strength-to-weight ratio
All this adds up to a quick payback with the WEATHER BREAKER; not only in energy savings and low maintenance, but in the daily operational benefits of using the best.
Optional Features:
- Brown exterior skin
- Exterior operated cylinder lock
- Exhaust ports
- White aluminum full-view sections
- Special track layout
- Reinforcing plate for draw bar operator
- Extra long life torsion springs
- PVC recessed step plate/lift handle
- Insulated window
Insulation Values:
- U-VALUE Section Test = .061
- R-VALUE Section Test = 16.4
General Specifications:
Upward-acting, sectional doors shall be polyurethane insulated, WEATHER BREAKER MODEL 175 by GENERAL DOORS CORP., Bristol, Pennsylvania.
Sections:
Door sections shall be 1-3/4 inches of polyurethane foam laminated to an inside and outside steel skin by means of a continuous production process. Foam shall be 2.6 lb/cu ft. density, providing insulation factors of 16.4 R-Value, and .061 U-Value. The outside skin shall be hot-dipped galvanized steel no less than .020" thick embossed with a stucco pattern and finished with a two-coat paint system. Inside skin is prepainted galvanized steel no less than .015" thick. Section design includes a thermal break preventing heat and cold conductivity. Bottom weather strip is a PVC bulb-type design.
| Window Guide |
| Door Width |
No. of Windows |
| Up to 9 ' 2 " |
2 |
| 9 ' 3 " to 12 ' 2 " |
3 |
| 12 ' 3 " to 16 ' 2 " |
4 |
| 16 ' 3 " to 20 ' 2 " |
5 |
| 20 ' 3 " to 24 ' 2 " |
6 |
Track:
Heavy guage galvanized steel track shall be 2" or 3" (as required). Track shall be bracket mounted for wood jambs, or clip style continuous reverse angle mounted with track adjustment to allow compression of optional top and jamb seals (requires door to lap opening by one inch). Vertical track shall be tapered for weather tight closure. Horizontal track shall be reinforced with galvanized angle engineered for door size. All reinforcing angle and mounting brackets to be welded to track, except where adjustable.
Hardware:
All hinges and roller brackets to be heavy galvanized steel. All rollers to have ball bearings with hardened races. Galvanized aircraft type lift cable to have minimum 7:1 safety factor. Counterbalance assembly shall consist of torsion springs mounted on a continuous shaft, or extension springs. Oil tempered steel spring wire for all springs.
Manufacturing Process:
Polyurethane has gained widespread acceptance as an efficient insulator with exceptional strength to weight characteristics. But, while placing foam between metal skins may produce an "insulated door", it does not produce a door that takes full advantage of the strength qualities of Polyurethane. Advancing the state-of-the-art, the exclusive "Neufoam System" used in these doors, produces the finest quality panels in the industry.
Only a carefully monitored, continuous foamed-in-place manufacturing process can insure permanent lamination between foam and metal skins. Only this process can produce a consistently high quality homogeneous panel, free of void and bubbles which can, over a period of time, dramatically reduce the strength and insulating qualities of the panel.
4724 (24 GAUGE SMOOTH RIBBED, WHITE OR BROWN)
4720 (20 GAUGE SMOOTH RIBBED, WHITE ONLY)
4716 (16 GAUGE SMOOTH RIBBED, WHITE ONLY)
INSULATED OR NON-INSULATED AVAILABLE
Insulation:
Steel doors can be supplied with 1-7/16" thick polystyrene foam insulation with a hard impact backer or optional 26 gauge galvanized steel. The R = 6.7.
Sections:
Section shall be roll formed of commercial quality galvanized cold-rolled steel. The exterior surface shall be rolled-formed with two U-shaped deep ribs and three small "pencil" ribs to provide strength and minimize surface imperfections. The horizontal meeting edges of each section shall be formed in ship-lap fashion. All stiles shall be formed of heavy galvanized steel. End stiles shall be box shaped and center stiles shall be attached to the section with aircraft type "Pop" rivets at points of contact, (i.e. face and return bends). Thickness of each section shall be 2" minimum.
Hardware:
Shall be heavy gauge galvanized steel. Rollers shall have a continuous steel rim, encasing ten hardened 1/4" diameter steel ball bearings. All hinges, brackets, and fixtures shall be attached securely to the stiles with 1/4" diameter thread forming bolts. Pre-punched and extruded holes in the stiles shall allow 100% bolt / thread engagement for superior holding power.
Finish:
Prefinished section material shall be chemically cleaned before application of polyurethane primer followed by a polyester coating on the face side, and a polyester coating on the inside.
Reinforcing Struts:
Struts shall be supplied, one per section on all ribbed steel doors over 13' 2" wide up to and including doors 18' 2" wide. Doors over 18' 2" wide shall have one additional strut, plus trusses supplied on alternating struts. All ribbed steel doors over 15' 2" wide shall have double end stiles, double roller hinges and long stem rollers.
Counterbalance:
Counterbalance shall be oil tempered, helical wound, torsion springs. (Springs shall be engineered to comply with requirements of NAGDM'S specifications 10,000 cycle minimum). Lift cables shall be aircraft quality, with a minimum safety factor as required in NAGDM'S specifications. (ANSI / NAGDM 102)
Anti-Corrosion Protection:
Paint alone is not adequate protection against rust. Moisture and other corrosive elements can attack metal through pinholes or scratches on painted surface. Unchecked, rust can expand, mar the finish, and weaken an ordinary steel door. So in addition to a 2-step paint process, all of the steel in the door is protected by a hot dip galvanizing process. This produces zinc oxide that actually grows into any damaged portion of the paint skin- preventing further corrosion.
