Extension Width / Depth Added: 4.5″ (114.30 mm)
Main Body Thickness: 1″ (25.40 mm)
Note: Key profile dimensions shown above. The 4-9/16″ extension is compatible with standard 4-9/16″ door jamb profiles.
Jamb depth extension – Increases standard jamb depth to accommodate thicker walls
4-9/16″ size – Standard extension dimension compatible with common jamb systems
Seamless attachment – Can be nailed or adhered to existing jamb edge for a continuous flush surface
Easy installation – Cut to width on site and secure with adhesive or screws
Paintable surface – Can be painted together with the existing jamb for color consistency
Cost-effective – Eliminates the need for custom-built extra-thick jambs
Door frame adaptation for insulated exterior walls (thickened walls)
Double-layer drywall partitions or light gauge steel stud walls
Renovation projects where existing jambs are too shallow
Walls with tile or stone veneer that increase opening depth
Any construction requiring increased standard jamb depth
Measure the actual wall thickness and calculate the required extension width before installation
Cut the extension to the precise width using a tape measure and saw
Apply wood glue or construction adhesive to the existing jamb edge
Secure the extension with a nail gun or screws into the existing jamb
Sand the joint after installation and paint together with the existing jamb for a seamless look