Over-inflated
This over-inflated F Series fender has bowed-out sides and a rounded top.
Fender Guide
Choosing the right size and type of fender, and inflating it correctly, is a vital part of your boat’s upkeep. Use the following charts to help you choose the best protection for your boat.
Polyform US Fender Size and Usage Chart
The right fender for the job is a vitally important aspect to observe when maximizing hull protection and fender longevity. Use this chart to choose the right fender type for your boat size and mooring conditions.
| FENDER / USAGE | TRAILERED BOATS | PERMANENT PROTECTED MOORINGS | PERMANENT UNPROTECTED MOORINGS | PILINGS | RAFTING | LOCKS / CONCRETE |
|---|---|---|---|---|---|---|
| G/NF SERIES |  |
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| Light to medium duty. Ideal for trailerable boats and boats under 35 feet. Not recommended for unprotected moorings. | ||||||
| F SERIES |  |
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| Heavy duty. Sizes for boats up to 120 feet. Best for unprotected moorings with large waves/tidal fluctuations. | ||||||
| A SERIES |  |
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| Heavy duty. Most stand-off for the money. Best rafting fender available. Can serve as mooring anchor buoy. | ||||||
| HTM SERIES |  |
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| Medium to heavy duty. Versatile center rope tube – maximum strength when hung horizontally. Best on boats up to 40 feet. | ||||||
FenderFits Inflatable Fender and Boat Size Chart
Use this chart to choose the FenderFits Inflatable fenders that suit the size of your boat.
| BOAT LENGTH | SUGGESTED FENDER SIZES | REFERENCE |
|---|---|---|
| 4.0-7.50 meters (under 25 ft) | 12" x 30" | FFI-12x30 |
| 7.50-10 meters (25-33 ft) | 12" x 42" 14" x 36" |
FFI-12x42 FFI-14x36 |
| 10-16 meters (33-53 ft) | 18" x 45" 18" x 58" |
FFI-18x45 FFI-18x58 |
| 16-21 meters (53-70 ft) | 18" x 45" 18" x 58" 28" x 28" ROUND |
FFI-18x45 FFI-18x58 FFI-28x28 |
| 21-30 meters (70-100 ft) | 24" x 42" 24" x 58" 28" x 28" ROUND 38" x 38" ROUND |
FFI-24x42 FFI-24x58 FFI-28x28 FFI-38x38 |
| 30-45 meters (100-150 ft) | 24" x 58" 24" x 66" 36" x 48" 28" x 28" ROUND 38" x 38" ROUND |
FFI-24x58 FFI-24x66 FFI-36x48 FFI-28x28 FFI-38x38 |
| 45-60 meters (150-200 ft) | 24" x 58" 24" x 66" 36" x 48" 36" x 75" 48" x 60" 38" x 38" ROUND |
FFI-24x58 FFI-24x66 FFI-36x48 FFI-36x75 FFI-48x60 FFI-38x38 |
| Over 60 meters (over 200 ft) | 24" x 66" 36" x 48" 36"x 75" 48" x 60" 48" x 72" 38" x 38" ROUND |
FFI-24x66 FFI-36x48 FFI-36x75 FFI-48x60 FFI-48x72 FFI-38x38 |
Fender Inflation Charts
An overinflated fender will become deformed and provide less reliable protection. Follow these inflation charts for happy fendering.
Polyform US Fender Inflation Chart
| Product | Max. Circumference inches | cm |
|
|---|---|---|
| A-0 | 25.1 in. | 63.8 cm |
| A-1 | 34.5 in. | 87.7 cm |
| A-2 | 45.5 in. | 115.6 cm |
| A-3 | 53.4 in. | 135.6 cm |
| A-4 | 64.4 in. | 163.5 cm |
| A-5 | 84.8 in. | 215.3 cm |
| A-6 | 106.8 in. | 271.2 cm |
| A-7 | 122.5 in. | 311.0 cm |
| F-1 | 18.8 in. | 47.9 cm |
| F-02 | 23.6 in. | 59.8 cm |
| F-2 | 25.7 in. | 65.4 cm |
| F-3 | 25.7 in. | 65.4 cm |
| F-4 | 26.7 in. | 67.8 cm |
| F-5 | 34.5 in. | 87.7 cm |
| F-6 | 34.5 in. | 87.7 cm |
| F-7 | 47.1 in. | 119.6 cm |
| F-8 | 47.1 in. | 119.6 cm |
| F-10 | 56.5 in. | 143.6 cm |
| F-11 | 66.6 in. | 169.1 cm |
| F-13 | 91.1 in. | 231.3 cm |
| G-1 | 11.0 in. | 27.9 cm |
| G-2 | 14.1 in. | 35.9 cm |
| G-3 | 17.3 in. | 43.9 cm |
| G-4 | 20.4 in. | 51.8 cm |
| G-5 | 27.6 in. | 70.2 cm |
| G-6 | 34.5 in. | 87.7 cm |
| HTM-1 | 19.8 in. | 50.2 cm |
| HTM-2 | 26.7 in. | 67.8 cm |
| HTM-3 | 33.0 in. | 83.7 cm |
| HTM-4 | 42.4 in. | 107.7 cm |
Note: Remove white plastic screw from the valve (located near the ropehold) and when inflating with an air compressor, set the PSI to 2 lbs / 0,15 bar of pressure at 20˚C. When inflating without a pressure gauge, fill the buoy or fender until the walls are fully expanded, but make certain you can depress the wall at least 1/4 inch with light hand pressure. Measure the circumference and compare it with the inflation chart for proper pressure. Overinflation will reduce the performance of the product and may cause premature failure. Overinflation voids the warranty.
Correctly inflated
FenderFits Inflatable Mega Fender Inflation Chart
| Product | Max. Circumference inches | cm |
|
|---|---|---|
| FFI-12x30 | 37.7 in. | 95.7 cm |
| FFI-12x42 | 37.7 in. | 95.7 cm |
| FFI-14x36 | 43.9 in. | 111.6 cm |
| FFI-18x45 | 56.5 in. | 143.6 cm |
| FFI-18x58 | 56.5 in. | 143.6 cm |
| FFI-24x42 | 75.4 in. | 191.4 cm |
| FFI-24x58 | 75.4 in. | 191.4 cm |
| FFI-24x66 | 75.4 in. | 191.4 cm |
| FFI-28x28 | 87.9 in. | 223.3 cm |
| FFI-36x48 | 113.0 in. | 287.1 cm |
| FFI-36x75 | 113.0 in. | 287.1 cm |
| FFI-38x38 | 119.3 in. | 303.1 cm |
| FFI-48x60 | 150.7 in. | 382.8 cm |
| FFI-48x73 | 150.7 in. | 382.8 cm |