How to measure the finished width and height use of 2x4s for the sides and header.
													
																	How to frame a garage door opening. 
									
	
		
	
																	This lumber will be used to attach your garage door track and a portion of your assembly. 
																	The garage door rough opening. 
																	The jambs need to be 17 inches. 
																	The opening must be finished framed before a garage door can be installed. 
															
													
									
	
		
	
																	Measure the distance from the bottom plate of the wall to a point that is 1 1 2 inches higher that the garage door height. 
																	Most garage door openings are just rough openings when the home is built. 
																	The rough opening of a garage door should be 3 inches wider than the door itself. 
																	A rough opening refers to the space left inside a door or window frame door in this case where the actual door will be fitted. 
															
													
									
	
		
	
																	Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected. 
																	So if your door is 9ft wide your rough opening should be 9ft 3 inches. 
																	If you already have all your measurements verified you can proceed to frame the garage door opening. 
																	Cut two 2 x 6 pieces of lumber and attach to the face of the wall running from the edge of your garage door jambs to the ceiling of your garage. 
															
													
									
	
		
	
																	How to frame a garage doors opening in this case 9ft wide by 8ft tall. 
																	It s essential to get this measurement right else your newly purchased garage door won t fit the opening or might actually be smaller than the opening. 
																	Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough opening. 
																	Pull a measurement from the floor of your space to the ceiling next to the door opening. 
															
													
									
	
		
	
																	These trimmers should be.