Style 1
- Width
- 1 7/8″
- Height
- 13/16″
- Profile
- Stepped overlap; 1/2″ underside recess.
- Available lengths
- 30, 36, 48, 60, 72, 84″
- Suggested floor transition
- Overlap a higher floor edge where the 1/2″ recess fits the measured change in level.
Interior Door Threshold Selection Guide
Hartford Building Products · Red Oak Only
Interior Door Threshold Selection Guide
Find the right profile for your floor transition. Compare widths, heights and lengths, then shop the red oak threshold that fits your doorway.
All thresholds below are solid, unfinished red oak—ready to stain or paint.
Start with Your Floor Transition
Measure the doorway length, the gap to cover and the difference between finished floor heights. Choose by the profile’s fit—not flooring material alone.
| Your project | Profiles to compare | Check before ordering |
|---|---|---|
| Overlap a higher floor edge | Style 1, 2, 4, 5 | Match the 1/4″ or 1/2″ underside recess to the floor edge. |
| Reduce from a higher floor to a lower floor | Style 3, C, D | Compare the slope, underside shape and high-end height. |
| Cover a joint between similar-height floors | Style 6 | The center stem needs room in the flooring gap. |
| Add a raised threshold across a doorway | ADA Profile, Style A | Choose 1/2″ or 3/4″ height and check door clearance. |
| Use a straight edge on one side | Style E, Style F | Fit the straight edge against the adjoining surface or another matching threshold. |
Floor-transition suggestions below are based on the profile drawings. Hardwood, tile, vinyl, laminate and carpet installations vary in thickness. Check actual finished levels; allow the flooring manufacturer’s required expansion space.
Compare Red Oak Thresholds
Width runs across the flooring joint. Length runs across the doorway. Heights describe the wood profile, not necessarily the floor-height difference it will bridge. Select your size on the linked product page.
Style 2
- Width
- 2″
- Height
- 9/16″
- Profile
- Stepped overlap; 1/4″ underside recess.
- Available lengths
- 30, 36, 48, 60, 72, 84″
- Suggested floor transition
- A narrow transition over a higher floor edge where a 1/4″ recess fits.
Style 3
- Width
- 2 1/4″
- Height
- 3/4″
- Profile
- Sloping reducer with a grooved high edge.
- Available lengths
- 36, 48, 60, 72, 84″
- Suggested floor transition
- Reduce from a higher wood floor to a lower adjoining surface; check the groove against the flooring edge.
Style 4
- Width
- 4″
- Height
- 5/8″
- Profile
- Wide stepped overlap; 1/4″ underside recess.
- Available lengths
- 36, 48, 60, 72, 84″
- Suggested floor transition
- Cover a wider joint while overlapping a higher floor edge with a 1/4″ recess.
Style 5
- Width
- 3 7/8″
- Height
- 13/16″
- Profile
- Wide stepped overlap; 1/2″ underside recess.
- Available lengths
- 30, 36, 48, 60, 72, 84″
- Suggested floor transition
- Cover a wider joint where the higher floor edge fits the 1/2″ underside recess.
Style 6
- Width
- 1 13/16″
- Height
- 1/2″ overall
- Profile
- T-profile; 1/4″ top thickness plus 1/4″ center stem.
- Available lengths
- 30, 36, 48, 60, 72, 84″
- Suggested floor transition
- Cover a joint between floors at similar heights, with the center stem fitting into the gap.
ADA Profile
- Width
- 3 1/2, 4 1/2, 5 1/2, 6 1/2″
- Height
- 1/2″
- Profile
- Low saddle with two sloped edges.
- Available lengths
- 3 1/2″ & 4 1/2″ widths: 24, 30, 36, 48, 60, 72″
5 1/2″ width: 24, 30, 36, 48, 60, 72, 84″
6 1/2″ width: 24, 30, 36, 48, 60, 72″ - Suggested floor transition
- A low raised threshold between floors at similar heights. Check the installed profile for accessibility needs.
Accessibility depends on the complete installed transition.
Shop This OptionStyle A
- Width
- 3 1/2, 4 1/2, 5 1/2, 6 1/2″
- Height
- 3/4″
- Profile
- Raised saddle with two sloped edges.
- Available lengths
- 3 1/2″ width: 24, 30, 36, 48, 60, 72″
4 1/2″, 5 1/2″ & 6 1/2″ widths: 24, 30, 36, 48, 60, 72, 84″ - Suggested floor transition
- A traditional raised doorway threshold between floors at similar heights.
Style C
- Width
- 2″
- Height
- 5/8″ overall; 3/8″ at opposite side
- Profile
- Offset underside; see the shaped edge in the drawing.
- Available lengths
- 36, 48, 60, 72, 84″
- Suggested floor transition
- A narrow transition between floors at different heights. Match the underside contour to both finished floor levels.
Style D
- Width
- 6 1/2″
- Height
- 1/4″ to 3/4″
- Profile
- Broad reducer rising to a flat high end.
- Available lengths
- 24, 30, 36, 48, 60, 72, 84″
- Suggested floor transition
- A wider ramped transition between a higher floor and a lower floor. Match the 3/4″ end to the higher surface.
Style E
- Width
- 4 1/2″ or 6 1/2″
- Height
- 3/4″
- Profile
- One sloped edge and one straight-cut edge.
- Available lengths
- Both widths: 24, 36, 48, 60, 72, 84″
- Suggested floor transition
- A one-sided transition against a higher surface; pair straight edges back to back for a wider raised threshold.
Style F
- Width
- 4 1/2″ or 6 1/2″
- Height
- 1/2″
- Profile
- One sloped edge and one straight-cut edge.
- Available lengths
- Both widths: 24, 36, 48, 60, 72, 84″
- Suggested floor transition
- A lower one-sided transition; pair straight edges back to back where a wider low threshold is needed.
Before You Order
- Measure twice. Confirm doorway length, coverage width, finished floor levels and clearance beneath the door.
- Compare the drawing. Check recesses, grooves and the underside—not just the overall height.
- Select your size. Lengths shown are listed order sizes. Trim and test-fit as needed; check the product page for current availability.
- Finish the wood. Stain or paint to suit your room and follow your finish manufacturer’s instructions.
Need help matching a profile? Email info@hartfordbuildingproducts.com with your measurements and a photo of the flooring joint.
Product specifications, linked HBP images and available size options checked September 23, 2026. Product pages are the source for current ordering details.