Inner Sill Strengthener Right RHD 68-79. 214-801-392 214-801-392 £40.00 Quantity: at £40.00 each Add To Basket Top quality product made by ourselves from 1.5mm mild steel, as per the original, with all the correct holes. Fits all Bay window 68-79 RHD right side. This is the sill strengthener that is sandwiched between the inner nnd outer sill on the NON sliding door side on all Bay window bus. Exact copy of the original part.