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Door Frames (Interior): Flat, Rabetted and Split Jambs

Interior Frames, as the name implies, are utilized for fastening doors on the interior of building structures and can be made from solid woods, finger jointed woods, veneers on various substrates, LVL, or composite materials such as MDF. Interior frames can be classified in two categories of design: flat or with a built-in door stop.

Flat jambs are manufactured either with straight edges which are at 90 degrees to the face, or with a 3 degree back bevel. This small back bevel creates a tighter fit between the door casing and the drywall. Another type of edge is the Texas “T” which is a small rabetted groove that assists the installer in placing the casing in the correct alignment along the edge of the jamb.

We supply door stop in a variety of profiles to suit customers’ needs. Generally these are supplied as a separate piece, but can also be provided already stitched onto the flat jamb. In this case it is common to mitre the top end of the stop with a 45 degree angle so that it fits neatly against the stop which is attached onto the head of the frame. Casing is available in standard patterns.

Rabetted jambs are made out of a single thicker piece of material and have a built in door stop. This eliminates the need to nail or staple a separate piece of doorstop onto the frame. Weston Wood Solutions supplies both Single rabetted and Double rabetted jambs, and heads in all standard lengths.

Split jambs are used in markets where the thickness of the wall (studs plus drywall) varies. They are supplied in male and female pairs and are adjustable over a small range of widths to accommodate these variations in opening size.

All types of interior frames can be supplied either rough cut (82” for a 6’8” or 96” for a 8’0” door) or with a top dado. Please ensure you specify whether a lug (additional length above the dado) is required or not. At Weston Wood Solutions, interior door frames are manufactured using our exact specifications and materials. We have a variety of materials, both domestic and imported from around the world, to position our customers competitively in the marketplace. With great machining and professional finish our interior door frames make pre-hanging and installation a breeze.

Types Available:

  • Single Rabetted Jamb Interior Door Frames
    • Eastern White pine – raw and primed
    • Ponderosa Pine – raw and primed
    • China Fir – primed
    • Radiata Pine – raw and primed
  • Double Rabetted Jamb Interior Door Frames
    • Eastern White pine – raw and primed
    • Ponderosa Pine – raw and primed
    • China Fir – primed
    • Radiata Pine – raw and primed
  • Flat Jamb
    • Eastern White pine – raw and primed
    • Ponderosa Pine – raw and primed
    • China Fir – primed
    • Radiata Pine – raw and primed
    • Elliotis pine – raw and primed
    • LVL – primed
    • LVL with OSB core – primed
    • Solid pine
    • Veneer wrapped
  • Split Jamb
    • Ponderosa Pine – raw and primed
    • China Fir – primed
    • Radiata Pine – raw and primed
    • Elliotis pine – raw and primed
    • LVL – primed

Sizes available:

Custom profiles are made by request

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