Duotone, 2026

iSUP Grace Air SLS 2026

3150mm long · 10'4"

838mm wide

152mm thick

280litres

Open in Studio See it on duotonesports.com

Sizes & Numbers

Listed by the brand, read off a photo, or worked out: where every number comes from

In one line

A fuller nose than most. A rounded pin tail, a full nose and gently curved rails.

derived · against the 157 other sup boards in the atlas, read off the outlines.

As listed by Duotone

Duotone iSUP Grace Air SLS 2026: every size as listed by Duotone
size	length	width	thickness	weight
280 L	10'4'' · 3150 mm	838 mm	152 mm	7 kg
310 L	11'2'' · 3404 mm	813 mm	152 mm	7.2 kg

Every size side by side, tails on one line, one scale

Next to your board?

Lay the Duotone iSUP Grace Air SLS 280 L over up to four others, at one scale.

Compare with…

Shape & Rocker

From above, then from the side, true scale · the chosen size solid, the others dashed

Read off the 280 L outline · derived

55 %wide point, 1718 mm from the tail

3.76length over width

492mm wide 12″ from the tail

21,465cm² of planform

Read off the 310 L outline · derived

55 %wide point, 1857 mm from the tail

4.19length over width

463mm wide 12″ from the tail

22,520cm² of planform

Rocker of the 280 L · borrowed (≈), estimated

≈ 38 mmtail rocker, at the tip

≈ 9 mm12″ from the tail

≈ 27 mm12″ from the nose

≈ 99 mmnose rocker, at the tip

≈ 1517 mmflat to within 3 mm, from 25 % to 73 % of the length

48 %of the length to the lowest point, from the tail

≈ 152 mmat its thickest, 42 % from the tail

≈ 50 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 310 L · scaled from the 280 L, borrowed (≈), estimated

≈ 42 mmtail rocker, at the tip

≈ 10 mm12″ from the tail

≈ 32 mm12″ from the nose

≈ 108 mmnose rocker, at the tip

≈ 1608 mmflat to within 3 mm, from 26 % to 73 % of the length

48 %of the length to the lowest point, from the tail

≈ 152 mmat its thickest, 42 % from the tail

≈ 54 mmlonger along the bottom curve than flat

Lay this rocker over other boards

True proportions · dots at 10 mm and 12″ in from each tip · bracket: flat to within 3 mm · drawn hollow: no usable side photo of this board · shaded: the middle 80 % of its group · No usable side photo of this board: the median of 49 inflatable SUP boards from 39 product lines. Tail ends set by rule, Claude or a brand convention on their photos, none checked by a person. · estimated