The CertainTeed Monogram Double 4" Clapboard is part of the ... longer than the typical 12 to 13-foot vinyl siding panel, so it will have less vertical seams on long windowless walls.

The Alside Charter Oak Clapboard is part of the Siding ... longer than the typical 12 to 13-foot vinyl siding panel, so it will have less vertical seams on long windowless walls.