Amarr Northwoods Collection

Overview

The Amarr Northwoods Collection solves a specific problem: how to get the look of horizontal plank wood siding on a garage door without the weight, cost, and ongoing upkeep that real wood demands. Amarr's answer is a ribbed steel panel with a printed horizontal woodgrain design. A plank texture runs across the full face of each section and reads as natural wood from the street.

The result is a door that fits modern, transitional, and mountain-inspired architectural styles. A Northwoods door in Cedar or Aspen Gray pairs naturally with board-and-batten siding, natural stone, fiber cement plank, and the warm exterior palettes that have become common in Colorado new construction and renovation.

Both models in the collection are fully insulated. There is no single-layer option. That reflects the Northwoods' positioning as a product for attached garages and primary residences rather than detached outbuildings. The collection is designed for homeowners who want both the visual character of a natural material and the thermal performance of a quality insulated door.

The Northwoods is also a strong fit for mountain properties in the foothills west of Denver. The woodgrain finish connects visually to the natural landscape, the steel construction handles mountain weather well, and the insulation supports year-round comfort in spaces that experience real winter conditions.

Construction and Materials

Both Northwoods models, NW3000 and NW3138, use three-layer insulated construction.

NW3000: The outer skin is 24-gauge steel, and the inner liner is 27-gauge steel. A polystyrene insulation core fills the space between them. The R-value is 9.05. The heavier outer gauge on the NW3000 provides better impact resistance than a standard 27-gauge outer skin. This model is the better choice when both thermal performance and dent resistance are priorities.

NW3138: Both the outer and inner skins use 27/27-gauge steel, with a polystyrene core. The R-value is 6.48. While the R-value is lower than the NW3000, the equal-gauge dual-steel construction makes this model particularly resistant to impact on both faces. The "3138" designation in Amarr's naming convention indicates this three-layer, dual-skin build.

The printed woodgrain pattern is applied to the ribbed panel surface during manufacturing. The horizontal ribs give the door dimensional texture. The woodgrain print adds color variation and grain detail. Together, they create a convincing plank appearance that holds up well under direct sunlight. That matters at Colorado's elevation, where UV intensity is measurably higher than at sea level.

Both models carry a 12-year paint finish warranty and a 3-year workmanship and hardware warranty.

Styles, Colors, and Window Options

The Northwoods has a focused design identity: modern plank. It is not a carriage house collection and not a traditional raised-panel door. The horizontal plank pattern reads contemporary and clean, fitting homes that lean toward a modern or transitional exterior.

Colors:

• Cedar: a warm reddish-brown woodgrain close in tone to natural western red cedar or redwood; works with warm-toned stone, brick, and siding
• Aspen Gray: a cooler gray-toned woodgrain that pairs with charcoal, white, and cool-tone stone and fiber cement exteriors

Window options fit within the plank design without disrupting the horizontal rhythm.

• Traditional placement: Short Panel or Long Panel layout windows across the top section
• Mosaic window placement: staggered or grouped window positions
• SlimLine windows with black frames: the black frame detail is a specific Northwoods feature; it reinforces the modern character of the door and reads like the black window frames on a contemporary home facade

Glass choices:

• Clear
• Frost
• Dark tint

Obscure glass availability in the Northwoods line was not confirmed at time of research.

Specifications at a Glance

Feature	NW3000	NW3138
Steel gauge (outer/inner)	24/27 ga	27/27 ga
Layers	3	3
Insulation	Polystyrene	Polystyrene
R-value	9.05	6.48
Design	Modern Plank ribbed woodgrain	Modern Plank ribbed woodgrain
Colors	Cedar, Aspen Gray	Cedar, Aspen Gray
Paint warranty	12 Years	12 Years
Workmanship/hardware warranty	3 Years	3 Years
Window frames	Black (SlimLine)	Black (SlimLine)
Sizes	Standard residential	Standard residential

Is It Right for Your Colorado Home, and How G Brothers Helps

The Northwoods is particularly well-matched to Colorado home design for reasons that go beyond aesthetics. The horizontal plank pattern connects naturally to the mountain and high-plains architecture that has shaped Front Range construction over the past two decades. New builds in communities from Castle Rock to Longmont regularly pair wood-look siding with natural stone and dark metal accents. The Northwoods fits that design language without needing modification.

On performance, the NW3000's R-9.05 insulation makes it the stronger choice for attached garages where heating and cooling efficiency matters. Homes in the foothills west of Denver, including Evergreen, Conifer, and Morrison, deal with more extreme temperature swings than the metro floor. The NW3000 handles that range more capably than the NW3138.

For buyers in hail-prone neighborhoods, the NW3138's 27/27-gauge dual steel provides meaningful impact resistance. Both faces are heavier gauge, which distributes impact force differently than a single heavy outer skin with a lighter inner liner.

The Northwoods also works well at mountain properties. A vacation home or full-time residence in Summit, Clear Creek, or Park County benefits from the printed woodgrain's visual connection to the landscape. The steel construction handles snow load, UV, and temperature cycling that would degrade real wood over a typical service life. The insulation helps make the garage usable in winter months without requiring the space to be fully conditioned.

G Brothers installs the Amarr Northwoods Collection throughout the Denver metro and into the foothills, with experience in both standard-size residential openings and the wider or taller openings common in mountain-area construction. A free estimate covers everything needed to spec the right model, size, and window configuration. G Brothers manages the order and installation, and the local service team supports the door through its full service life.

A common question from Colorado buyers is how the Northwoods compares to an actual wood plank door. Real wood doors in the horizontal plank style do exist. They are heavier, more expensive, and require seasonal maintenance. In Colorado's dry climate, wood can check and gap at the joints if not sealed regularly. The Northwoods' steel body does not have those issues. The printed woodgrain ages without the color changes or surface damage that real wood accumulates. For a mountain property used seasonally, the Northwoods is a practical choice that real wood cannot match on maintenance terms.

Another question is about window frame color. The SlimLine windows in the Northwoods come with black frames. That is a specific design choice by Amarr. The black frames reinforce the modern character of the door and mirror the dark window frames that are common on contemporary and modern-farmhouse homes. If a buyer's home has white or bronze window frames, that contrast should be discussed before ordering.

Cedar versus Aspen Gray is the final common decision point. Cedar is warmer and reads as more natural and earthy. Aspen Gray is cooler and reads as more modern and architectural. Cedar pairs well with stone, wood siding, and warm-toned stucco. Aspen Gray pairs well with fiber cement, white trim, and charcoal or black accents.

Want to put numbers to this? Use the interactive roof snow load calculator below, or open the full roof snow load calculator with examples and notes.