5 gallon compound and 1 gallon hard
PolyFair Fairing Compound, F26R Polyester fairing compound. Use MEKP Catalyst. Water resistant, low density polyester-based fairing compound. Has good adhesion to cured fiber-reinforced polyester and vinylester laminates. Sands easily, gives a hard finish after a full cure, yet it is not brittle and has good impact strength