Most bifold door openings are finished with drwyall.
													
																	Bifold door rough opening size. 
									
	
		
	
																	For example our aluminum bifold door system is available in a range of standard sizes to suit the most popular opening sizes and can be made to measure up to 20 panels 10 in each direction with a total span up to 65 wide and 10 4 tall. 
																	Getting the rough opening size right the first time will save you from frustration when installing your doors. 
																	You should add 2 1 2 to the height of the actual door. 
																	The opening size for a bifold door is measured from the finish face of the opening not the trim. 
															
													
									
	
		
	
																	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. 
																	Just add 2 to the width of the actual door size. 
																	Framing rough opening sizes are really quite simple. 
																	Typically the rough bifold door opening should be sized 2 inches wider and 2 inches higher than the door itself regardless of the bifold door size. 
															
													
									
	
		
	
																	The rough opening should be 49 by 82 for a 48 by 80 inch door. 
																	This will give you room to space the door frame off of the sub floor. 
																	Measuring a bifold door opening. 
																	A casing type molding is often used around a bifold door. 
															
													
									
	
		
	
																	When you open the door instead of swinging in or out it folds in half at. 
																	How to determine bifold door opening size. 
																	This allows for 1 2 inch thick drywall on both sides and at the top 80 inches for the doors and hardware and a 1 to 1 1 2 inch space under the door the space between the floor and the bottom of the door may vary depending on the type of flooring.