Identify the actual depth relationship.
Ask the installer to assess the new frame and existing or changed interior wall finish together. Keep this measurement question separate from the rough opening’s width and height.
Windows · Everson, Washington
Window replacement in Everson should explain any interior extension jambs needed to finish the depth between the new frame and the room-side wall. The unit’s width and height do not describe that interior-depth work.
Ask the provider to identify the supplied frame, the finished wall depth and the proposed extension-jamb arrangement. Keep its material and finishing responsibility in the proposal so the room-side result is understood before ordering.

Window replacement
Have the installer assess how the selected frame meets the finished interior wall. An extension-jamb allowance should explain the compatible component or site-made finish work, rather than leaving the depth and final surface to an unnamed trim task.
Ask the installer to assess the new frame and existing or changed interior wall finish together. Keep this measurement question separate from the rough opening’s width and height.
Have the proposal state the material and whether the compatible parts are supplied or the interior reveal is finished on site. Confirm that the actual window’s instructions govern its connection.
Ask who handles the included painting or staining and how the extension meets the intended casing or other room finish. Record any retained pieces that need a separate fit assessment.
Before work begins
Use the City Building Department resources to confirm the requirements for the actual window replacement and associated wall changes. Include relevant product and opening information rather than treating interior finish depth as a description of the whole construction.
This guide does not supply a universal jamb dimension or attachment method. Have the installer verify the selected window, wall depth and applicable finish detail for each affected opening.
Have the installer assess the frame-to-finished-wall relationship separately.
Ask the proposal to name the actual material, preparation and installation work included.
Keep the intended final surface and its responsible provider explicit in the window proposal.
Share interior photographs and planned wall-finish changes so the provider can assess the frame and extension-jamb scope.