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User Guide

How to measure your Fenders

Follow these three simple steps to get the perfect fit.

Step One

Identify the manufacturer and model of the fender (e.g., Polyform Norway F1).

Step Two

Measure the fender’s length and diameter between two solid objects.

Step Three

Use those measurements to match the correct fender cover size from our range.

How to Inflate

Follow these three simple steps to get the perfect inflation.

How to inflate with polyform adaptor
How to inflate with a hand pump or footpump
Fender & Buoy Inflation Instructions WITH POLYFORM® INFLATION ADAPTER
Fender & Buoy Inflation Instructions BY AIRCOMPRESSOR WITH BLOWGUN (pointed end nozzle)

Top tip

If you are struggling to get air into the fender then the one-way valve maybe caught, gently push a thin object into the valve to release.

Step One

Remove the valve screw from the fender using a flathead screwdriver.

Step Two

Attach the adapter (available seperately) to the valve, connect the pump, and inflate the fender.

Step Three

Detach the adapter and securely screw the valve cap back into place.

Frequently Asked Questions (FAQs)

No, whilst we do offer an adaptor which works with many car tyre foot pumps this is not essential to inflate Polyform Fenders.

No, a bike pump does not give enough pressure to inflate Polyform boat fenders.

No, this will not all enough pressure to inflate.

  • Compressor guns are ideal as they fit within the valve housing and will quickly inflate the fenders to correct pressure (Max. 0.15 to 0.20 bar of pressure at 20° Celsius)

 

  • Stirrup or double action foot pumps (see image below) come with several nozzles with at least one of these working with Polyform boat fenders

  • Our small handy to stow fender pump comes complete with an adaptor for inflating or topping up when needed (recommended up to F4 and A3 sizes only)

Fender Size Guide

Not sure which fender covers are right for your boat? Use the guide below to explore the most suitable options for your vessel’s size.

0–10 ft
(0-3 meters)

Ideal protection for small tenders
and dinghies.

Recommended Fenders:

F01S

11–16 ft
(3.4-4.9 meters)

Great fit for day boats, RIBs, and
small cruisers.

Recommended Fenders:

F01M, G3

17–23 ft
(5.2-7 meters)

Recommended for mid-size
powerboats and weekenders.

Recommended Fenders:

F01L, F02, F1

24–30 ft
(7.3-9.1 meters)

A popular size for coastal cruisers and larger vessels.

Recommended Fenders:

F2, F3, F4

31–45 ft
(9.4-13.7 meters)

Suitable for offshore cruisers and mid-sized yachts.

Recommended Fenders:

F5, F6, F7

46–60 ft
(14-18.2 meters)

Designed for motor yachts, catamarans, and commercial craft.

Recommended Fenders:

F8, F11

61 ft+
(18.6+ meters)

For large yachts, superyachts, and commercial marine vessels.

Recommended Fenders:

F13

Conversion Guide

Handy quick reference to convert mm to inches for the Polyform range


All inch values are converted from the millimetre figures and rounded to two decimal places.
Polyform model MM length MM diameter Inch length Inch diameter
Polyform A028021011.02"8.27"
Polyform A138029514.96"11.61"
Polyform A250039019.69"15.35"
Polyform A357546022.64"18.11"
Polyform A471055027.95"21.65"
Polyform A594071037.01"27.95"
Polyform A61,12085044.09"33.46"
Polyform A71,4201,10055.91"43.31"
Polyform F01 Small37013014.57"5.12"
Polyform F01 Medium46513018.31"5.12"
Polyform F01 Large56013022.05"5.12"
Polyform F161015024.02"5.91"
Polyform F0266020025.98"7.87"
Polyform F261022024.02"8.66"
Polyform F374522029.33"8.66"
Polyform F41,04022040.94"8.66"
Polyform F577529030.51"11.42"
Polyform F61,09029042.91"11.42"
Polyform F71,02037540.16"14.76"
Polyform F81,44037556.69"14.76"
Polyform F111,45559057.28"23.23"
Polyform F131,88075074.02"29.53"
Polyform G351514520.28"5.71"
Polyform G458517023.03"6.69"
Polyform G570521527.76"8.46"
Polyform HDF 91,20050047.24"19.69"
Polyform HDF 101,60050062.99"19.69"
Polyform HDF 111,45065057.09"25.59"
Polyform HDF 121,85065072.83"25.59"
Polyform HDF302,3501,17092.52"46.06"
Polyform HL147023018.50"9.06"
Polyform HL262030024.41"11.81"
Polyform HL374535029.33"13.78"
Polyform HL495040037.40"15.75"
Polyform CC243038516.93"15.16"
Polyform CC350045019.69"17.72"
Polyform CC459054023.23"21.26"

Have a Question? Or just want to get in touch?

Expert Advice

Our team knows boats. Count on us for fast, knowledgeable support whenever you need it.

Made-to-Fit Solutions

Whether you're docking a dinghy or a superyacht, we’ll help you find the right fender for your vessel.

Reliable Protection

Tough, tested fenders you can trust to keep your boat safe in any mooring condition.

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