G-2000: Commercial Garage Doors | Knechtel Door Systems


  • Stronger and more energy-efficient insulation

  • Solidly bonded to the steel sheets providing a section that is resistant to flexion.


  • 23-gauge or 20-gauge steel, providesa bending resistance 15% greater than 26-gauge steel, for better resistance to impact and vandalism.

  • Highly corrosion-resistant with galvanized steel having a minimum of G60 zinc coating (180 g/m2).


  • Sections are strengthened by 2 steel walls joined together with mechanical interlocking joints which are more solid than just two bonded walls.

  • Their mechanical thermal breaks are more efficient compared to thermal breaks made with glue.

  • Triple-contact joints provide 2Watch our video times more weathertightness than those of the competition.


  • Provide stronger fastening for hinges and struts. These 14-gauge plates are 2 times thicker than 20-gauge plates used by other manufacturers.


  • Provide a thermal break that is moreWatch our video effective than steel end caps which form a thermal bridge.

  • As structural elements of the sections, the kiln-dried pine wood end blocks are installed at the outer ends of the section. They are stronger than insulation covered with a steel cap.


  • Provides much better fastening of the end hinges. The lag screws engage 8 threads into the wood, compared to a self-tapping screw going through a steel end cap engaging only about 2 or 3 threads.

Polyurethane and smooth steel finish
Joints and metal plates
Wood end blocks and lag screw system

Panel construction - interior view


1 Steel walls

  • G60 hot-dipped galvanized steel with five coats of protective finish.
    G-2020: 20-gauge exterior and interior steel skins
    G-2023: 20-gauge exterior and 23-gauge interior steel skins
    G-2323: 23-gauge exterior and interior steel skins
  • Baked-on polyester paint. Can be repainted.
  • Smooth finish on both sides of the door.
  • Same quality of corrosion-resistant steel for interior and exterior faces

2 1 ¾” (44.5 mm) insulated door with high-pressure injected polyurethane foam ensuring a high thermal-resistance rating of R-16 (RSI 2.8 or k= 0.357 W/m2K) and the solidity of a composite material.

3 InterLokTM joints between each section:

  • Mechanical joints ensure stronger sections with walls of each panel mechanically interlocked (not only bonded by the polyurethane).
  • Mechanical thermal break avoids heat transfer between the interior and exterior walls of each section.
  • Triple-contact joint prevents air infiltration.

4 U-shaped tubular bottom weatherstripping made of thermoplastic elastomer (TPE) ensures the weathertightness of the threshold. R emains flexible and watertight during cold weather, to -62°F (-52°C).

5 Wood end blocks made of kiln-dried pine (grade 4). With our lag screw system, ensure better fastening of the end hinges. They also provide a thermal break which prevents thermal bridging.

6 14-gauge steel reinforcement plates placed inside the door for solidly attaching hinges and struts.

Door weight:
G-2020: 3.35 lb/ft2 (16.3 kg/m2)
G-2023: 3.15 lb/ft2 (15.4 kg/m2)
G-2323: 2.85 lb/ft2 (13.9 kg/m2)


G-2020, G-2023, G-2323 steel colour

The accuracy of colours on the website may vary depending on your screen settings. To see the true colours, please contact your local Garaga dealer for a sample.


 Garage door G-2020, G-2023, G-2323 - 2 Grooves      Garage door G-2020, G-2023, G-2323 - 4 Grooves

         2 Grooves                        4 Grooves


Widths (In 1” (25 mm) increments) : From 5’ to 24’2” (1.5 m to 7.4 m)

G-2020 | G-2023 (In 3” (76 mm) increments) : From 6’ to 24’ (1.8 m to 7.3 m)
G-2323 (In 1” (25 mm) increments) : From 6’ to 24’ (1.8 m to 7.3 m)


WindowsStandard Windows
21” x 13” (533 mm x 330 mm)
Glass: see details below
Colours: White

Oval Windows
Polycarbonate only
26” x 13” (660 mm x 330 mm)
Colour: Black

G-4400 Sections (Full Vision)
Colours: White, Black and Anodized

Thermopane WindowsSingle glass (3 mm)Polycarbonate (3 mm)
Clear, Satin, Wired, Tempered, Laminated or TintedClear, Satin, Tempered or TintedSingle or Thermal (Sealed): Clear or Tinted

Full vision
Single PaneFluted Polycarbonate  Single Polycarbonate  
Clear, Satin, Tempered, Laminated or TintedClear or BronzeClear or Tinted
Sealed WindowsSealed Polycarbonate (thermal)
Clear, Satin, Wired, Glue Chip, Low-e, Tempered, Laminated or TintedClear


Steel tracks:

  • 2" (50 mm), 13-gauge or 14-gauge
  • 3" (76 mm), 12-gauge


 2" Commercial Light Duty2" Commercial Heavy Duty3" Industrial
 Light Duty Heavy Duty Super Heavy Duty
Welded, made of galvanized steel and secured with mounting brackets
2’’ (50 mm), 14-gauge2’’ (50 mm), 13-gauge3’’ (76 mm), 12-gauge
Reinforcement for horizontal tracks
2’’ x 2’’ (50 mm x 50 mm) steel bracket
13-gaugeDoor weight:
- under 650 lb (250 kg) = 13-gauge
- over 650 lb (250 kg) = 8-gauge 1
Door weight:
- under 650 lb (250 kg) = 13-gauge
- over 650 lb (250 kg) = 8-gauge 1
Galvanized steel
Industrial type
With ball bearings
Torsion type
10,000-cycle spring supported by a 1’’ (25 mm) 14-gauge steel tube10,000-cycle spring supported by a 1’’ (25 mm) 2 solid zinc-plated keyway shaft10,000-cycle spring supported by a 1’’ (25 mm) 2 solid zinc-plated keyway shaft
In galvanized steel, installed
on door sections
- From 12’4’’ (3.8 m) to 16’3” (4.9 m): 2 1⁄4” (57 mm), 22-gauge struts
- From 16’4’’ (5 m) and more: 3’’ (76 mm), 22-gauge struts

Hardware options Hardware
Precision end bearing plate 3For 650 lb (250 kg) doors and over, to provide stronger support for the opening system of the door.
Double hingesRecommended for doors 14’ and wider, for a more stable mounting system.
11-gauge hingesFor very wide and very heavy doors,
1 000 lb (453 kg) and over
12-gauge continuous angleProvides stronger attachment of the tracks on the wall.
1 1⁄4” (30 mm) solid shartProvides more strength to the spring system.
Bridge strutEnsures better resistance to wind load.
Safety bottom bracketsFor a safer door system. If the lifting cables break, these brackets stop the fall of
the door.
Tension bridge reinforcementFor very wide doors (18’ 3” wide and over), prevent warping of the steel door sections, meaning the curving of sections which can be caused by indoor and outdoor temperature differences.
Precision rollersMachined steel: recommended for heavy doors and dusty environments.
Black nylon: made of rigid plastic, they reduce the noise of the door in motion.
Rubber: ensure smooth rolling and are recommended to reduce the noise of the door in motion (ideal for condo or apartment). NB-SS: with a stainless stem, ideal for car washes.
C-shaped or bumper springsFor a softer stop, they are recommended for all manually-operated doors with a high-lift track or a full vertical track.
Pusher springsHighly recommended for large size doors with a standard lift with a Jackshaft opener installed beside the door. They ensure the good tautness of the lifting cables when the door is operating.
Chain hoistFor easier closing and opening of a door operated manually.
"Z" or "L“ style track guardsProtect the tracks in high-traffic areas (ex.: forklifts).
High-cycle springsRecommended for intense uses of more then 50 operation cycles per day. Vary from 25,000 to 200,000 cycles.

G-2000 series overhead doors are constructed with a smooth galvanized steel finish. They have a thermal resistance factor of R-16, due to Garaga’s use of high-pressure injected polyurethane foam insulation. For sectional doors that are used several times per day, the G-2000 series is an ideal choice. Garaga has conceived and constructed these doors to weather the harsh treatment they are exposed to on a daily basis.

At 145 km per hour, the effect of the wind on a garage door is comparable to that of a 2,800-pound automobile. Do you believe your garage door can survive that much power? Our GARAGA garage doors can! At Knechtel Door Systems, we are pleased to offer overhead doors that are able to withstand high winds, all because of the polyurethane foam added between door panels and the long-lasting materials used for each component.


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