Fontaine Fifth Wheel Application Click on a Photo Below for More Information. (A36) Stationary Angle Mount (AFP) Adjustable Flat Plate Mount (AWB) Air Wedge Slide Bracket Blocked Heavy Duty (FMA) Stationary Frame Mount (MWS) Manual Wedge Slide Bracket (PLA) Stationary Long Plate Mount (PSA) Stationary Short Plate Mount (XAWX) Extra Heavy Duty (XPLA) Xtra Heavy Duty (XPSA) Xtra Heavy Duty