The word Garage has originated from French to English since 1902. Garage means shelter and since 1908 the architect Charles Harrison Townsend used the word garage door instead of the motor house. Motor house is the home for the car. Present days the garage door is used for referring to the collection of vehicles and the building contains them. Garage doors are unlike regular doors. The weight of the garage door is more than 180kg. So it is difficult to open and close manually without any external aids.
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So that unique mechanism is employed to operate the door open and close. It contains an arrangement that allows open and close by an electric motor remotely or manually. In recent days garage door openers are operated wirelessly to avoid safety issues associated with that. The garage door dimension and garage door size are standardized to avoid safety-related issues. Here we are going to see about garage doors, standard garage door size, and garage door dimensions.
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Types Of Garage Doors

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Garage doors are classified according to its dimension as follows, Single Garage doors, double garage doors, and custom garage doors. The single garage door is useful for one vehicle garage. Typical door size was 7ft in width and 7ft in height. Whereas a double garage door was meant for two-vehicle space open by a single door, standard garage door dimensions are 10ft in width and 7ft in height.

Garage Door Design

The garage door design is a necessary thing that needs to be done before installation due to its potentiality towards safety and ease of operation. Design terminology followed, as shown in the below figure are Door opening height, width, headroom, side room, and depth of garage. This terminology is common to both the single door garage and double door garage. Garage door sizes are defined by the above terminologies.
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Garage Door Opening Width And Height

Garage door opening width and height is the dimension of the door need to be designed based on the requirement of the customer. The length and height of the vehicle decide the garage door opening width and height. Based on the vehicle width and height, it should be sufficient enough to enter and leave without any disturbance. 

Side Room

The side room is the space offered on the left and the right sides of the garage door opening. Side room provides enough space for the door opening mechanism to perform open and closing of the door without any disturbance. It is necessary to provide enough space for the door opening mechanism to offer a healthy operation.


The headroom is the space offered between the ceiling portion to the top end of the door opening. Some door opening mechanism is required in the headroom, in that case, enough space availability in the headroom was vital. 

Standard Garage Door Size

Standard garage door size is also based on the selected type of sectional opening door or roller opening doors. The sectional door opening for both the single and double door garage given in the below figures.
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The Sectional door opening is also known as panel opening doors. The mechanism attached to the ceiling offers the door to lift towards the ceiling while opening. For the opening and closing mechanism, the horizontal door panels attached with the track hinged on the roof offer extraction and retraction of doors operated by an electrical motor. The typical door dimension for sectional door opening given below.

Standard Garage Door Sizes For The Sectional Door:

  • Single sectional door garage door dimensions are 2010mm to 3415mm of height and 2415mm to 3500mm of width.
  • Double sectional door garage door dimensions are 2010mm to 3415mm of height and 3505mm to 6700mm of width.
  • The sectional door or panel lift door left back into the garage. So it is necessary to provide a minimum headroom of 400mm.

Standard Roller Door

In the garage roller door system, the roller door and the tracks with supporting brackets offer the curtain roll inside the garage headroom. The headroom should offer good enough room for the operation of the opening and closing mechanism.

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The typical dimension for the roller garage door opening was given below,

Standard Garage Door Sizes For Roller Garage Door:

  • Single roller door garage door dimensions are 2200mm to 3100mm of height and 750mm to 3430mm of width.
  • Double roller door garage door dimensions are 2200mm to 3100mm of height and 3435mm to 5500mm of width.
  • For the roller garage door, the headroom is offering the space for the lever and spring mechanism to do the opening and closing of the door. So it is necessary to maintain 450mm of the headroom. Side rooms also required to support the L-supports and electric motor.

Custom Garage Design

Custom garage designs are used for heavy vehicles. It requires more height and width of the door than the standard one. So for this case, the customization of the door needs to be carried out.
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Nowadays almost all of us are having a vehicle irrespective of the economic level of the individuals. You may or may not own a house. It is always advisable to gain knowledge about standard garage door sizes and their working as we are going to use it in some way. This page will brighten your knowledge about garage doors with A to Z's of the gateways. To know more about different door ideas you can visit The Arch Digest.