Dorema Awning Sizes: A-Measurement Guide and Calculator

Nov 27, 2025

Ever pitched you caravan awning and thought, “That’s… not right”? Short answer on Dorema awning sizes: measure your rail, height, and projection first, then match to the model. This awning size guide shows you how to get the perfect fit without the guesswork.

Choosing the correct Dorema awning size is essential if you want proper shade, weather protection, and a comfortable outdoor space. Since Dorema offers a wide range of full awnings, porch awnings, and air models, understanding how to measure and convert your caravan’s A-measurement is the key to getting it right.

Dorema Awning Size Calculator

Pick your caravan's make, model, type, and year to find its A-measurement and Dorema awning size.

Step-by-Step: How to Find Your Dorema Awning Size

Finding the right Dorema awning size starts with accurate measurements.
This avoids problems such as sagging fabric, poor sealing, or an awning that does not reach the floor correctly.
Dorema sizes are based on the A-measurement system, which allows you to match your caravan to the correct awning size number.

Two caravans pitched side by side with full awnings set up on a green campsite with trees behind

Understanding the A-Measurement (The Dorema Standard)

The A-measurement is the industry standard used by Dorema to determine which awning size suits your caravan.
It measures the distance from the ground, up the awning rail, around the top, and back down to the ground.
Once you know this number, you can convert it into the correct Dorema size.

Awning size	A-measurement
Size 6	775 – 800
Size 7	800 – 825
Size 8	825 – 850
Size 9	850 – 875
Size 10	875 – 900
Size 11	900 - 925
Size 12	925 – 950
Size 13	950 – 975
Size 14	975 – 1000
Size 15	1000 – 1025
Size 16	1025 – 1050
Size 17	1050 – 1075
Size 18	1075 – 1100
Size 19	1100 – 1125
Size 20	1125 – 1150
Size 21	1150 – 1175
Size 22	1175 - 1200

Detailed Guide on Measuring Your Caravan A-Measurement

To take an accurate A-measurement, measure from the ground at one side of the caravan.
Run the tape along the full awning rail and bring it down to ground level on the other side.
Make sure the caravan is on level ground and avoid measuring around obstacles such as roof racks or aerials.
Double-checking this measurement helps avoid costly sizing mistakes.

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Finding Your Caravan's Factory A-Measurement

Many caravan manufacturers publish the A-measurement in the handbook or on their website.
If available, this can save time and remove uncertainty.
Factory A-measurements are especially useful if your caravan sits slightly higher or lower than typical models.

Converting Your A-Measurement to a Dorema Size Number

Once you have the A-measurement, match it to Dorema’s official size chart.
For example, an A-measurement around 900cm may correspond to a Dorema Size 10.
Measurements around 1000–1050cm often fit a Size 13.
This conversion ensures your awning sits correctly along the rail and reaches the ground with proper tension.

Family relaxing outside a caravan with a full porch awning set up on a sunny campsite lawn

Sizing by Awning Type and Pole System

Different Dorema awning types require different sizing considerations.
Full awnings rely heavily on the A-measurement for accuracy.
Porch and air awnings depend more on the straight rail length and fitting height.
Dorema also offers various pole systems, from traditional steel frames to the Easy Air Frame system.

Full Awning Sizes vs. Porch Awning Lengths

Full awnings are sized strictly by the A-measurement.
They are available from around 2.5m to 6m wide, with depths typically between 2.25m and 2.5m.
Porch awnings attach only to part of the rail.
They usually have fixed widths between 2m and 4.5m and do not rely on the full A-measurement.

Dorema Porch Awning Sizing (e.g., Quartz 400 and Quattro)

Porch awnings such as the Dorema Quartz 400 and Quattro are sized by their fixed width.
This is often around 4 metres, along with a height fitting range.
To size correctly, measure the straight part of the awning rail and ensure the width fits without covering windows or vents.
Porch depths usually range between 2.5m and 3m, creating generous extra living space.

Sizing for Dorema Air Awnings (e.g., Magnum)

Dorema air awnings, such as the Magnum, use a fitting-height system rather than the A-measurement.
This requires measuring from the ground to the awning rail.
As long as the height fits within the model’s accepted range, you simply choose the width that best suits your caravan.

White caravan fitted with a full-size grey Dorema-style awning on a clean studio background

Pole Materials and Easy Air Frame (EAF)

Dorema offers steel frames, fibre-tech poles, and the Easy Air Frame system.
Steel frames suit more permanent seasonal setups, while EAF provides fast inflation and easier pitching.
Choosing the correct pole system ensures proper tension, stability, and long-term durability.

Need Help Deciding?

Reach out to our friendly experts and we'll be happy to help!

Call & text: 020 8064 2643
Email: info@campernation.co.uk

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Phil McEleney

Get to know me

Started CamperNation to make buying caravan and glamping gear feel simple, honest, and stress-free. Now helps customers daily with awnings, power solutions and outdoor setups. Usually found talking canvas, campsites, and why the kettle is the most important piece of kit.

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