The goal when measuring your jamb for our exterior steel double doors with thermal break is to get the measurement from the outermost finishing of your exterior (stucco, brick, concrete, wood, etc.) to the face of the drywall inside. To get this measurement, make sure that you're including all parts of the building materials and the finishings.

Double Steel Doors with Thermal Break

Arch Top Double Steel Doors with Thermal Break

In-Swing

Out-Swing

These exterior steel double doors with thermal break thresholds are made from a mix of cold-rolled steel and Jansen thermal break materials. These thermal break models are recommended for more extreme conditions where the temperatures drop to 27 degrees Fahrenheit or below.

These exterior steel double doors with thermal break are pre-hung and include both the doors and fully assembled frame (packaged separately for ease of transport and installation). The jamb size is measured at 6” deep (net size) and made from a mix of cold-rolled steel and Jansen thermal break materials.

An inherent characteristic of steel is it’s high thermal conductivity. In colder climates, standard steel doors struggle to prevent cold transfer from penetrating to the interior of the home, causing the door to “sweat” and a layer of condensation to buildup on the interior when introduced to heat. These thermal break models include a carbon-like thermal barrier made to interrupt this transfer of cold, preventing the cold air from penetrating to the interior of your home, resulting in a more energy efficient product.

We recommend these thermal break models for more extreme conditions where the temperatures drop below 27 degrees Fahrenheit.

Strike plates, which are typically included when purchasing a lockset, are the plates that receive the throws of the latch and deadbolt and secure your door in place. All of these exterior steel double doors with thermal break come with laser cut strike plate openings on the dummy leaf door, and feature pre-drilled and pre-tapped holes for machine screws.

These exterior steel double doors with thermal break are equipped with flush bolts installed on both the top and bottom of the inactive dummy leaf door. When engaged, these flush bolts will secure the dummy leaf door into the frame. On taller doors, we use a longer rod on the upper flush bolt for ease of access. When disengaged, both doors can fully open, allowing larger items like furniture to pass through more easily, while also creating a more open concept when entertaining guests.

These exterior steel double doors with thermal break come standard with modern bullet hinges. The frame will have the bottom portion of the hinges welded on (Hinge and male pin). The top receiving portion of the hinge will be welded onto each door leaf, and include a screwed in grease fitting, allowing you to maintain and grease the hinges regularly via a standard grease gun. 

One copper crush washer per hinge is included and required prior to hanging the door onto the frame. These washers protect the hinges by introducing a softer copper metal between the 2 hinge components in order to absorb the friction and allow the doors to swing smoothly. This hinge system is far superior to ball bearing systems, as the bearings are made of stainless steel, which is a harder metal inside a steel barrel, causing wear to both components and sagging over time.

An astragal is the welded component on the doors that provide a seal preventing exterior elements such as air and light from penetrating into the home. These steel exterior double doors with thermal break come equipped with an astragal, but the location of that astragal will vary depending on the swing of the door.

Double Doors (Outswing) - Astragal will be welded on the exterior of the active leaf door and seal against the inactive dummy leaf door when in the closed position.

Double Doors (Inswing) - Astragal will be welded on the exterior of the inactive dummy leaf door and seal against the active leaf door when in the closed position.

These steel exterior double doors with thermal break come standard with dual foam weather stripping, which comes pre-installed around the entire frame of the door, as well as down the full length of the center astragal. This full suite of weather stripping acts as a barrier from outdoor elements and helps prevent cold or hot air from leaking out of the home, resulting in a much more energy efficient product.

These steel exterior double doors with thermal break come with pre-installed rubber door sweeps at the bottom of each door leaf. These door sweeps create a tight seal between the threshold and the door leafs themselves, preventing outside elements from entering your home. This simple yet effective feature helps insulate your space, improving energy efficiency.

These steel exterior double doors with thermal break come filled with a polyurethane foam core, which acts as a sound deadening material, and also provides some insulating properties for better energy efficiency. The foam also helps prevent moisture from accumulating inside the steel tubes, contributing to the door's longevity.

These steel exterior double door with thermal break models feature a welded 3” nailer fin around the frame of the door, and is designed to be installed from the exterior of your space. This nailer fin is inset to allow for a 1/2” of finish work on the exterior of your home, and includes pre-drilled holes around the entire face of the fin.

Steel doors offer many more enhanced security features when compared to their wood, fiberglass, vinyl, or aluminum counterparts. These steel exterior double doors with thermal break are made with a mix of cold-rolled steel and Jansen thermal break materials, which includes a galvanized protectant to help prevent rust and corrosion. These thermal break door models feature a carbon-like thermal barrier that is used to interrupt this transfer of cold, preventing the cold air from penetrating to the interior of your home, resulting in a more energy efficient product.

Steel doors offer many more enhanced security features when compared to their wood, fiberglass, vinyl, or aluminum counterparts. These steel exterior double doors with thermal break and side windows are made with a mix of cold-rolled steel and Jansen thermal break materials, which includes a galvanized protectant to help prevent rust and corrosion. These thermal break door models feature a carbon-like thermal barrier that is used to interrupt this transfer of cold, preventing the cold air from penetrating to the interior of your home, resulting in a more energy efficient product.

How do I measure my jamb?

The goal is to get the measurement from the outermost finishing of your exterior (stucco, brick, concrete, wood, etc) to the face of the interior drywall.

How thick are your exterior steel double door with thermal break jambs? 

These exterior steel double door with thermal break jambs come standard at 6” thick. Custom jamb sizes are available via our made to order section.

Is the jamb the same thing as the frame? 

The jamb refers to the vertical components of the overall door frame. The jamb size refers to the thickness of those vertical components.

How does the frame mount to the wall? 

These steel exterior double doors with thermal break feature a welded 3” nailer fin around the frame of the door, and is designed to be installed from the exterior of your space. This nailer fin is inset to allow for 1/2” of finish work on the exterior of your home, and includes pre-drilled holes around the entire face of the fin.

Is the jamb included with the door?

Yes, the jamb is a component of the frame, which is made specifically for the door that it is packaged with.

Is the jamb/frame galvanized or zinc coated?

Yes, these exterior steel double doors with thermal break jambs and frames are treated with a galvanized protectant to help prevent rust and corrosion.

How is the jamb insulated?

We use a polyurethane foam filling in our exterior steel double door with thermal break jambs for sound deadening purposes, which also provides some insulating properties. These thermal break models also include a carbon-like thermal barrier that is used to interrupt this transfer of cold, preventing the cold air from penetrating to the interior of your home, resulting in a more energy efficient product for cold weather climates.