FSA4 Outline: Simon Anderson Front Fins: FSA4 Height: 4.63 in,      11.80 cm Base:    4.51 in,      11.50 cm Area:   15.80 sq in, 40.10 sq cm Rear Fins: FSA4 Quad Rear Height: 4.36 in,      11.10 cm Base:    4.14 in,      10.50 cm Area:   13.24 sq in, 33.60 sq cm Base Depth: 1/2 in. only Simon knows quads just as well as he knows thrusters, this quad set proves it. Click on thumbnail to enlarge image. RTM (Resin Transfer Molded) | Material Info >>