South Western Model Company’s F Unit roof top coils “Dynamic Hatch Set (4 versions)” has been added to your cart. View cart $6.00 South Western Model Company's F Unit roof top coils quantity Add to cart SKU: DHRTC Category: Plastic Parts Related products Cab Doors (Pair, Reversible) $6.00 Add to cart FP Conversion Parts Set $10.00 Add to cart Fan cluster with center buttons $8.00 Add to cart A Unit, shell only $25.00 Add to cart