A pre-hung door consists of a door hung on hinges and assembled in a wood frame (the frame is also called the door “jamb”), with a door stop. A pre-hung door is ready to install in the door opening, with no on-site assembly required. This reduces construction time (and scheduling) and lowers project cost. If the pre-hung door is also pre-finished, this further reduces steps and cost in the construction process.

We not only manufacture the highest quality door slabs, but we also offer optional pre-hanging of the doors. Factory pre-hanging ensures that hinge pockets are mortised square and precise, and that hinges are always flush on the door and frame. Hinges are included in the price of pre-hanging, and are available in a selection of color choices. Boring and latch/dead bolt mortising are also provided at no additional cost with factory pre-hanging. A choice of single or double bore options are available in different “backset” positions (the placement of the handle or lockset from the door edge). Factory pre-hanging also ensures that the “reveal” (the small gap between the door and the jamb, when the door is closed) is always correct.

To learn about our pre-hanging options and choices, click the links below:

Pre-Hanging Interior Doors

For Interior doors, we offer solid Knotty Alder wood jambs. Our Interior door jambs are flat jambs with an adjustable stop. If we pre-finish the door, the jambs and stop are finished separately (matching the door Stain or Stain/Glaze color), providing for on-site adjustment of the stop without finish touch-up.

Knotty Alder, Flat Jamb w/Adjustable Stop
Knotty Alder, Flat Jamb w/Adjustable Stop
Knotty Alder Flat Jamb, Edge View
Knotty Alder Flat Jamb, Edge View

For Interior pre-hanging, we also offer bull-nosed kerfed flat jambs, in solid Knotty Alder. Kerfed flat jambs are slotted on the edge for wrapping the drywall corner bead (rounded drywall corners) into the jamb. Kerfed flat jambs provide for a clean opening, with drywall connecting directly to the door fame, and no case mouldings.

Knotty Alder, Bull-Nosed Kerfed Flat Jamb w/Adjustable Stop
Knotty Alder, Bull-Nosed Kerfed Flat Jamb w/Adjustable Stop
Kerfed Flat Jamb, Edge View
Kerfed Flat Jamb, Edge View

Interior door hinges are square corner 3.5” hinges on all 1-3/8” thick doors, and square corner 4” ball-bearing hinges on all 1-3/4” thick Interior doors. Nine different hinge colors are available, at no additional cost.

Available Hinge Colors (3.5″ Hinges Shown)

Bright Chrome Hinge
Bright Chrome
Antique Brass Hinge
Antique Brass
Antique Nickel Hinge
Antique Nickel
Bright Brass Hinge
Bright Brass
Dull Brass Hinge
Dull Brass
Dull Chrome Hinge
Dull Chrome
Flat Black Hinge
Flat Black
Oil Rubbed Bronze Hinge
Oil Rubbed Bronze
Satin Nickel Hinge
Satin Nickel

Pre-Hanging Exterior Doors

Pre-hanging of Exterior doors is more expensive than pre-hanging Interior doors. First, our Exterior doors are framed with a more robust rabbeted jamb, made of solid Knotty Alder. A rabbeted jamb includes a non-adustable stop cut into the jamb, and Q-Lon Weatherstrip which is inserted into a kerf (or slot) cut into the stop of the jamb. Weatherstrip is a durable foam rubber material used to seal the side and top edges of an Exterior door, to limit air transfer and exposure to outside elements.

Knotty Alder, Rabbeted Jamb w/Weatherstrip
Knotty Alder, Rabbeted Jamb w/Weatherstrip
Knotty Alder, Rabbeted Jamb, Edge View
Knotty Alder, Rabbeted Jamb, Edge View

Our pre-hung Exterior doors also include an aluminum (Oil Rubbed Bronze color), adjustable Threshold (or sill), a metal walkway (or “ramp”) at the bottom of the entry unit. Pre-Hung Exterior doors also include a door sweep, mounted to the outside bottom door edge.

Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold, Edge View
Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold, Edge View
Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold
Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold
Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold
Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold

Pre-hung Exterior doors include 2” wide x 1-1/16” thick Brick Case Moulding for the exterior side of the door. The Brick Mould has an eased edge on the top two surface corners of the moulding (called Eased 2 Edges, or E2E).

Brick Case Moulding
Brick Case Moulding
Brick Mould, Installed View
Brick Mould, Installed View

If Sun Mountain pre-finishes a pre-hung Exterior door, the Knotty Alder rabbeted jamb and Knotty Alder Brick Mould are also finished to match the door Stain or Stain/Glaze color.

Exterior door hinges are more robust square corner 4.5” ball-bearing hinges. Nine different hinge colors are available, at no additional cost.

Available Hinge Colors (4.5″ Hinges Shown)

Bright Chrome Hinge
Bright Chrome
Antique Brass Hinge
Antique Brass
Antique Nickel Hinge
Antique Nickel
Bright Brass Hinge
Bright Brass
Dull Brass Hinge
Dull Brass
Dull Chrome Hinge
Dull Chrome
Flat Black
Oil Rubbed Bronze Hinge
Oil Rubbed Bronze
Satin Nickel Hinge
Satin Nickel

Jamb Species, Types

Jamb Species

For both Interior and Exterior doors, we offer solid Knotty Alder wood jambs.

Jamb Types

Our Interior door jambs are flat jambs with an adjustable stop. We also offer bull-nosed kerfed flat jambs with an adjustable stop (for Interior doors only, at an extra charge). Kerfed flat jambs are slotted on the edge for wrapping the drywall corner bead (rounded drywall corners) into the jamb. Kerfed flat jambs provide for a clean opening, with drywall connecting directly to the door frame, and no case mouldings.

Knotty Alder, Bull-Nosed Kerfed Flat Jamb w/Adjustable Stop
Knotty Alder, Bull-Nosed Kerfed Flat Jamb w/Adjustable Stop
Knotty Alder, Flat Jamb w/Adjustable Stop
Knotty Alder, Flat Jamb w/Adjustable Stop

Exterior doors are framed with a more robust rabbeted jamb. A rabbeted jamb includes a non-adjustable stop cut into the jamb, and Q-Lon Weatherstrip which is inserted into a kerf cut in the stop of the jamb. Weatherstrip is a durable foam rubber material used to seal the side and top edges of an Exterior door, to limit air transfer and exposure to outside elements. Our pre-hung Exterior doors also include an aluminum (Oil Rubbed Bronze color), adjustable Threshold (or sill), a metal walkway (or “ramp”) at the bottom of the entry unit. Pre-Hung Exterior doors also include a door sweep, mounted to the outside bottom door edge. Pre-hung Exterior doors include 2” wide x 1-1/16” thick Brick Case Moulding for the exterior side of the door. The Brick Mould has an eased edge on the top two surface corners of the moulding (called “Eased 2 Edges”, or E2E). Exterior door hinges are more robust square corner 4.5” ball-bearing hinges. All of these elements combine to add the additional cost of pre-hanging an Exterior door.

Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold
Aluminum (Oil Rubbed Bronze Color), Adjustable Threshold
Knotty Alder, Rabbeted Jamb w/Weatherstrip
Knotty Alder, Rabbeted Jamb w/Weatherstrip
Brick Case Moulding
Brick Case Moulding

Jamb Widths

Interior Jamb Widths

Flat (non-Kerfed) Interior door jambs are available in the following widths, to match the following wall stud and sheetrock thicknesses:

Solid Knotty Alder, Flat Jamb w/Adjustable Stop

Stud, Sheetrock Thickness Flat Jamb Width
2×4 Stud, 1/2” Sheetrock 4-5/8” Wide
2×4 Stud, 5/8” Sheetrock 4-7/8” Wide
2×6 Stud, 1/2” Sheetrock 6-5/8” Wide
2×6 Stud, 5/8” Sheetrock 6-7/8” Wide

Our bull-nosed kerfed flat jambs for Interior doors are available in the following widths, to match the following wall stud and sheetrock thicknesses (Note: Kerfed flat jambs are more narrow than regular flat jambs, to allow for wrapping the drywall corner bead into the jamb):

Solid Knotty Alder, Bull-Nosed Kerfed Flat Jamb w/Adjustable Stop

Stud, Sheetrock Thickness Flat Jamb Width
2×4 Stud, 1/2” Sheetrock 3-1/2” Wide
2×4 Stud, 5/8” Sheetrock 3-1/2” Wide
2×6 Stud, 1/2” Sheetrock 5-1/2” Wide
2×6 Stud, 5/8” Sheetrock 5-1/2” Wide

Exterior Jamb Widths

Rabbeted jambs for Exterior doors are available in the following widths, to match the following wall stud and sheetrock thicknesses:

Solid Knotty Alder, Rabbeted Jamb

Stud, Sheetrock Thickness Rabbeted Jamb Width
2×4 Stud, 1/2” Sheetrock 4-5/8” Wide
2×4 Stud, 5/8” Sheetrock 4-7/8” Wide
2×6 Stud, 1/2” Sheetrock 6-5/8” Wide
2×6 Stud, 5/8” Sheetrock 6-7/8” Wide

Handing & Swing

Handing & Swing refers to the side of the door which is hinged, and the way the door swings inside or outside of the room or home. Consider the way you would like your door to open when making this choice.

A simple way to understand handing is to stand in the doorway with your back against the jamb of the door where you want the hinges to be placed. From this position, if you want the door to open to your left, it is a left hand door. From this position, if you want the door to open to your right, it is a right hand door.

Next, determine if you want the door to swing inside or outside the room or home. Inside is an “inswing” door, and outside is an “outswing” door. Review the illustrations below to identify the way you would like your door to be handed and swing (Note: These illustrations apply to Interior or Exterior single doors).

Single Door, Left Hand Inswing
Single Door, Left Hand Inswing
Single Door, Right Hand Inswing
Single Door, Right Hand Inswing
Single Door, Left Hand Outswing (sometimes called Right Hand Reverse)
Single Door, Left Hand Outswing (sometimes called Right Hand Reverse)
Single Door, Right Hand Outswing (sometimes called Left Hand Reverse)
Single Door, Right Hand Outswing (sometimes called Left Hand Reverse)

For Interior or Exterior double doors, one door is designated as “active” (operating knob or handle to open the door), and the other door is designated as “inactive” (still opens and closes, but no working knob or handle). The inactive door includes an attached T-astragal with flush bolts (top only for Interior doors, and both top and bottom for Exterior doors) to secure the door in the closed position. Review the illustrations below to select which side of your double door you would like active, and its handing and swing (inside or outside of the room or home).

Double Door, Left Hand Active, Inswing
Double Door, Left Hand Active, Inswing
Double Door, Right Hand Active, Inswing
Double Door, Right Hand Active, Inswing
Double Door, Left Hand Active, Outswing (sometimes called Double Door, Right Hand Reverse)
Double Door, Left Hand Active, Outswing (sometimes called Double Door, Right Hand Reverse)
Double Door, Right Hand Active, Outswing (sometimes called Double Door, Left Hand Reverse)
Double Door, Right Hand Active, Outswing (sometimes called Double Door, Left Hand Reverse)

In addition to these handing & swing options, we also offer Interior double doors with a “ball catch” or a “bipass” configuration. These double door options are most frequently used on closet door applications. For example, ball catches are typically used with “dummy” (non-active) handle sets, on outswing closet doors. Ball catch hardware is included at no additional charge on double ball catch doors, and track hardware is provided at no additional charge on double bipass doors. We do not bore for the dummy handle sets on these options. Review the illustrations below to select one of these Interior double door applications.

Double Ball Catch
Double Ball Catch
Double Bipass
Double Bipass

Bore Position

When you order a pre-hung door, we can bore your new door for a handle or lockset, at no extra charge. We offer both single bore and double bore options. Double bores are typically used on Exterior doors, with a lockset with deadbolt. Our bores include mortising the edge of the door for the latch (latch and dead bolt for double bore), and mortising the “strike” on the jamb leg (where the latch inserts, or latch and deadbolt for double bore).

The first bore is always 36” from the bottom of the door, and the bore hole diameter is always 2-1/8”. For double bore options, the distance between the two bore holes is always 5-1/2” center to center (from the center of the diameter of one bore to the center of the diameter of the other bore). If these bore positions and dimensions do not match your desired hardware, please visit www.sunmountaindoor.com or contact us to order custom specifications. Alternatively, you may select the “No Bore” option, and have your new door bored for hardware by your installer. Available “backsets” (the distance from the edge of the door to the center of the bore diameter) are:

Available Backsets

2-3/8”
2-3/4”

Review the following illustrations to select the bore and backset you desire for your new door.

Single Bore Backset Options and Specifications

Single Bore, 2-3/8” Backset
Single Bore, 2-3/8” Backset
Single Bore, Latch Mortis
Single Bore, Latch Mortis
Single Bore, 2-3/4” Backset
Single Bore, 2-3/4” Backset

Double Bore Backset Options and Specifications

Double Bore, 2-3/8” Backset
Double Bore, 2-3/8” Backset
Double Bore, Latch Mortis
Double Bore, Latch Mortis
Double Bore, 2-3/4” Backset
Double Bore, 2-3/4” Backset

Shipping Pre-Hung Doors

All orders are shipped direct to the home or jobsite in sturdy crating. Single door units are shipped pre-hung (as applicable), ready to install. Pre-hung double doors, are shipped “Knocked Down” (or KD) and must be re-assembled prior to installation. Freight and crate charges are calculated based upon volume (door count), and are assessed at the time of check out.

Crating Pre-Hung Doors
Crating Pre-Hung Doors