SILLS – The member forming the bottom of a rough opening for window usually designed with a sloped top surface.
SM 55S
SM 58S
SM 59S
SM 67S
SM 73S
SM 74S
SM 78S
SM 81S
SM 83S
SM 84S
SM 85S
SM 92S
SM 93S
SM 101S
SM 102S
SM 106S
SM 113S
SM 118S
SM 120S
SM 127S
SM 131S
SM 162S
SM 163S
SM 164S
SM 165S
SM 166S
SM 167S
SM 168S