How far do Sill-Rite sills protrude from the opening?
How far Sill-Rite sills protrude from the opening depends on the wall thickness and the depth of the window. Sill-Rite Premium sills come in depths of 3-9 inches (in one inch increments) for various wall thicknesses and window depths. The sill needs to extend at least one inch beyond the opening depth to accommodate the decorative profile.
