wood framing dimensions
These rough opening dimensions are typical, however it is possible that in your case the openings are supposed to be a different size. Verify each item against these dimensions or your dimensions which should supersede.
- Attic ladder at 25 1/2″ x 54 1/2″ (Cannot be installed over a 1-story attached garage, unless the attic space above is isolated by a firewall from the rest of the attic area.)
- Medicine cabinets are typically 14″ x 20″ (check with cabinet manufacturer as some dimensions may vary). Ensure medicine cabinet is 48″ above finished floor and at least 3″ from an inside corner)
- Doors (door width + 2 1/2″)
- Windows and patio doors (check framing plan for dimensions)
- Bedroom window sills not more than 42″ A.F.F. and all window sills level
- Mirrored closet slider doors – exact size
- Fireplace openings (check fireplace manufacturers specifications)
- Fireplace furrout (depth of fireplace + 1″ for floor mounted fireplaces)
- Kitchen window – centerline of window must line up with proposed center of sink
- Built-in wall oven – check framing plan or architect’s detail sheet
- Vanity spaces – 24″ minimum depth, cabinet + 1 1/2″ width.
- Bathtub – 32″ depth and 60 1/2″ width.
- Garage door – 7′ 1″ opening height.
- Single-door opening: 16′ 3″, using a 16′ 9″ header truss (truss should not be notched or cut, spliced or otherwise altered)
- Double door opening: 8′ 3″, using two 2×12 headers set at a center post
- Furrouts and plant shelves – check against framing plan dimensions
- Kitchen cabinet furrdowns – Width to extend over all continuous connected cabinets (to include all corner wraps) + 1″ overhang at ends. Depth is cabinet depth + 1″ overhang at front.
- Framed stair walls – 42″ above nose of stair tread
- Framed guardrail height at landing or 2nd floor – 42″
- Kitchen peninsula wall under flush countertop – 34 1/2″
