Caravan and motorhome awning size guide
Learn more about how to measure a caravan and find the right awning for your vehicle.
Measuring a caravan for a full-size awning.
The universal and most reliable method for measuring a caravan awning is to use the caravan's A-Measurement. The caravan’s A-Measurement Size categorises all full-size awnings.
How to measure a caravan’s A-measurement
A caravan’s A-measurement is the distance in centimetres from ground level, going up and then all the way around a caravan's awning rail and back down to the ground again at the other side.
Your caravan’s rail measurement should be contained in the owner's manual, on the page listing the caravan’s dimensions, this is shorter than the A-measurement. You can easily measure the A-measurement yourself by using a tent peg, tape measure and a ball of string.
Firstly, put the tent peg into the ground directly below the awning rail entrance at one end of the caravan. Then, tie the end of the string to it. If you don’t have a tent peg or the ground is hard, just secure the string with a small, heavy implement.
Next, feed the string all the way around the awning rail, all the way along to the ground at the other end of the caravan. If the awning rail has a prominent curve at the bottom sections, let the string drop to the ground as in the diagram.
To measure your caravan's full awning size, you need to cut the string where it meets the ground and measure it in centimetres. This will give you your caravan's A-Measurement, which will fall into a range of standard awning sizes. For instance, if your A-measurement is 970cm, you would select your awning size from the 950-975cm range. However, sometimes your A-measurement may be between two awning size ranges. In such cases, it's advisable to opt for the larger size. This will allow for some slack and give you room for manoeuvre, which can be useful on an uneven pitch.

Measuring a caravan for a porch awning guide
Measuring your caravan for a porch awning is very different from measuring for a full awning, as a porch doesn’t wrap all the way around one side of your caravan. This type of awning is usually secured to the ground with pegs or guide ropes, similar to a tent.
The size you need for a Porch Awning relies on two measurements:
1) The height measurement (H), which is taken from ground level vertically up to the awning rail (H)
2) The length measurement (L) is the straight section across the top of the awning rail.
There are, however, more things to consider when measuring for a Porch Awning. The most obvious is that the door should be within the section measured so that it opens comfortably into the porch. Also, ensure that side windows and refrigerator vents are considered and not obscured.
In the diagram example, if a Porch Awning measuring the full length of L2 were fitted, the side wall of the awning would prevent the window from opening. Therefore, to ensure the window opens, you would need to measure the length from the point where the window begins (L).
MEASURING A MOTORHOME FOR AN AWNING
Most awnings for a motorhome fit best when using a Fiamma or Thule awning channel or driveaway kit.
There are options available such as magnetic driveaway kits or tie down straps which are thrown over the vehicle and pegged down if you do not have an awning channel available.
Measuring your motorhome to fit an awning requires two key dimensions as well as the consideration of fitment.
1 ) The height measurement (H) which is taken from the ground level vertically up to the fitment height (i.e awning channel). This is crucial to choosing the correct awning. This often varies depending on whether the vehicle is loaded or unloaded.
2) The length measurement (L) us normally used when sizing a fixed awning. More drive away awnings will take a similar length of rail but use a driveaway kit in between, therefore requiring approximately 3 meters of rail.

If get stuck measuring your caravan or motorhome, don't hesitate to call the awnings department on 01934 524240 or visit us in person for a professional measurement at Weston-super-Mare, 2 minutes from junction 21 of the M5 motorway. Find us by clicking here!