haha think i figured it out. This is their interpretation of the floor wing allowance. "Six support structures," and notice how many slats it has...
Bodywork declared as “Floor Edge Wing” must:
a. LiewithinRV-FLOOR-EDGE.
b. Beasinglevolumewithnoapertures.
c. Its complete surface, when intersected with any X-plane must produce only a single section that is continuous and closed, having cross-sectional area no greater than 2000mm2. This section must be between 5mm and 20mm distant from the curve produced by intersection of the Floor Body with the same X-plane, at its closest point.
d. Itscompletesurface,whenintersectedwithanyZ-planemustproduceonlyasingle section that is continuous and closed.
e. Itscompletesurfacemustbetangentcontinuousandanyconcaveradiusofcurvature must be greater than 25mm.
For the sole purpose of providing a structural connection between the Floor Edge Wing and the Floor Body, it is permitted to add up to six support brackets per side of the car. These brackets, which need not comply with parts (a) to (e), will nevertheless be considered part of the Floor Edge Wing and must:
f. Be in their entirety within 40mm of the Floor Body and 30mm of the Floor Edge Wing.
g. Benomorethan5mmthick.Afilletradiusnogreaterthan2mmwillbepermitted where these brackets join to the components they connect.
h. Benolargerthan40mmintheX-directionandhavenodimensionthatexceeds 60mm.
i. Not be closer than 50mm at any point to any other such support bracket.
j. Not be visible from below.
Whereas McLaren and others made a horizontal wing with six swans necks, RB made a vertical wing with six slots at its base. Brilliant.