Home > Products > Moulding > Window Sill & Nosing > PVC Window Sill [1-1/4″ x 5-1/16″] PVC Window sill measures 1-1/4″ x 5-1/16″. Sold by the linear foot up to 17′ pieces. This item goes with the PVC Window Nosing. Add to basket for Quote * Please select length and quantity to add to basket for quote.