How to Determine Bifold Door Opening Size | Home Guides

Bifold doors fold in half when you open them.Bifold doors fold in half when you open them.

A bifold door consists of a pair of panels attached to each other with hinges. When you open the door, instead of swinging in or out, it folds in half at the hinge and slides on runners to the side of the doorway. Because the open door extends only half as far into the room as a swinging door does, bifold doors are suitable for closing off small spaces, such as closets and laundry cupboards. Wide closets might need two bifold doors side by side. Before you buy the doors, measure the opening to determine what size to get.

Measure the width of the opening at the top, middle and bottom. Save the smallest of these measurements.

Check whether the opening already has trim installed. If it does, subtract 1 inch from the width to determine the appropriate width of the door. If the opening doesn't have trim yet, subtract 2 inches from the width; the extra space gives you room to add the trim.

Measure the height of the opening in three places. Use the smallest of these measurements.

Subtract 2 inches from the height of the opening to determine the height of the door, if the opening does not yet have trim installed. If the opening does have trim installed, subtract 3/4 inches to find the height of the door.


  • If you are using two bifold doors together in the same opening, subtracting 1 or 2 inches from the width of the opening gives you the combined width of the two doors.


Slide-Co Slide-Co 164183 Bi-Fold Door Repair Kit with 2 Door Set
Home Improvement (Slide-Co)
  • Repairs 2 doors
  • Fits a 7/8in. wide track system
  • Repairs a 3/8in. diameter system
  • Easy to install

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Home Depot | Home Services & …
Home Depot | Home Services & …

Better quality bifold doors

I need to replace several sets of closet doors, and am looking for a source for better-quality bifold doors.
The ones at Home Depot seem to have flimsy hanging systems; the one I installedl recently keeps coming off the track, is impossible to adjust properly.
I'm wondering if someone makes a better quality door, and where to buy same in the Wash DC metro area. Thanks in advance.

Stanley Hardware Stanley Hardware 48-Inch Bifold Set #402044
Home Improvement (Stanley Hardware)
  • Designed for 1-inch thick panels; total width of 48 inches
  • Supports 2 doors weighing up to 30 pounds each
  • White finish
  • Includes a pair of snuggers, top pivots, guide wheels, bottom pivots, hinges, knobs and aligners
Door H Closet Door Spring
Home Improvement (Door H)
  • Closet Door Spring
PRIME-LINE PRODUCTS/SLIDE-CO Prime-Line Folding Door Hardware Kit
  • For 24 to 36 2 door systems
  • For 7/8 to 1-3/8 thick doors up to 35 lbs. per panel
  • 35-3/4 overall track length
  • Top hung surface mount steel track with off white finish
  • Boxed

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  • Avatar niner_72601 Partially replace my existing cabinets?
    Jan 21, 2007 by niner_72601 | Posted in Decorating & Remodeling

    I have cabinets in my kitchen that are painted.......i want to go oak face frame and doors...............can i pull off the existing face frame, and replace with an oak question is......whats the best way to build the frame......dowels?

    • The face frames may be a beotch to replace; they were built on the cabinet boxes, or glued to them. Just depends on the construction. The best way is to use pocket screws. There is an angled hole (pocket) drilled into th …e fancy machine).

      Otherwise, you just apply the boards individually to the cabinet box and pin the edge that hangs down with a finish nail (not the best method, but it's done on built in shelves everyday).