Sort by: Top Sellers Sort by: Most Popular Sort by: Price Low to High Sort by: Price High to Low Sort by: Top Rated Products Smooth Flush Solid Core Primed MDF Interior Closet Bi-fold Door With Trim Set your store to see localavailability Beveled Edge Mirror Solid Core Chrome MDF Interior Closet Bi-fold Door Smooth Flush Solid Core Primed MDF Interior Closet Bi-fold Door with Chrome Trim 59 in. x 80 in. Beveled Edge Mirror Solid Core MDF Interior Closet Bi-Fold Door with White Trim Polished Edge Mirror Solid Core Chrome MDF Interior Closet Bi-fold DoorPolished Edge Mirror Solid Core MDF Interior Closet Bi-Fold Door with White TrimMir-Mel White Mirror Solid Core MDF Interior Closet Bi-fold Door with Chrome Trim Mir-Mel Primed Mirror Trim Solid MDF Interior Closet Bi-fold Door Mir-Mel Cherry Mirror Gold Trim Solid MDF Interior Closet Bi-fold Door Select 2 to 4 Items to CompareSkip to main content. Home Guides Home Home Improvement Troubleshoot, Fix and Repair How to Determine Bifold Door Opening Size 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. /Getty Images Suggest a Correction Prepare to Install Bi-fold Doors Remove the old doors and hardware. Then measure the closet opening. Use this to check the size recommendations when buying new doors. Good to KnowFor smaller openings, consider using a single bi-fold door. Repair the door opening as needed, such as filling old screw holes and painting. To help position the new doors in the opening, lightly mark the centers of the closet. Use a level to mark plumb lines on the sides of the jambs. Install the Track and Brackets Bi-fold doors work with a track and brackets. Cut the track to leave a 1/16-inch gap on either end. Then install the track – centered on the top of the frame (header) – with the pivot bracket toward the jamb. Center the jamb bracket at the floor. Drill pilot holes and then fasten the bracket to the jamb with screws. Before installing the hardware, paint the doors.
It's easiest to paint them on sawhorses. When the doors are dry, use a hammer to lightly tap the pivots into the holes at the top and bottom. Install the doors by inserting the top pivots into the brackets. Then seat the bottom pivots. Insert the snugger guide (the plastic white round piece that's shown in the picture) into the track. Then squeeze the guide pivot on the top of the door, position it under the track, and release it, making sure the guide pivot is securely in the track. Check the door height. The doors shouldn’t rub on the floor or come in contact with the header jamb. To change the height, lift the door and rotate the bottom pivot. To make it plumb, lift the door and slide it into the desired position on the jamb bracket. Loosen the screw in the top pivot bracket and slide it until the door is plumb and then tighten. Some bi-fold doors include pulls, but you can also install decorative hardware to complement the other doors. To install decorative pulls, mark a comfortable height on the face of the guide door – centered is usually best for ease of use.
Hold the hardware in place, marking the holes. Then secure the hardware. Aligners help keep the doors closed. From inside the closet, loosely attach them on the back of the doors about 12 inches from the floor. Adjust in or out so the doors snap closed. Then tighten the screws. Make sure the doors are working properly and make adjustments if needed. Watch Our DIY Basic Videos What Is The Backset Of A Door?How Do I Drill A Pilot Hole? Tips on How to Size a Rough Door Opening for a Bifold Door By Mark J. Donovan When installing a Bifold door into a wall it is important that the rough opening for the Bifold door be sized correctly. If the rough opening is not sized correctly the Bifold door will either not fit if it is too small, or have wide gaps if it is too large. Sizing a Bifold Door Rough Opening with a Door Jamb OpeningTypically the rough opening should be sized 2 inches wider and 2 inches higher than the door itself. For example a four-foot wide (48”) by six feet, eight inches high (80”) Bifold set of doors, would require a rough opening width of 50 inches and a height of 82 inches.
This sized rough opening will allow for either a doorjamb kit to be installed or for ¾” thick select lumber to be used to create the finished doorjamb. Note that most bifold door assemblies do not come with a doorjamb kit so using ¾” thick select lumber to create the finished doorjamb is fairly common. The bifold door mechanical bracket assemblies actually screw into this finished doorjamb so it is important that the doorjamb be installed plumb and level. To complete the interior trim work associated with the doorjamb, when using ¾” select lumber, case moulding is wrapped around the perimeter of it. For best results, mitered cuts are employed. Sizing a Bifold Door Rough Opening for a Sheetrocked Wrapped Opening If the Bifold door is to be installed into a sheetrocked wrapped opening the rough opening width should be sized to the actual width of the Bifold doors (48” in the case of this example). The rough opening height should be the height of the door plus 3/4″ (80 ¾” in the case of this example).