Read CR's review of the Revere Sovereign Select Double 4. We've tested and reviewed products since 1936. ... Available in lengths longer than the typical 12 to 13-foot vinyl siding panel, ...

In our lab tests, Siding models like the CedarBoards Insulated Double 4" Clapboard are rated on multiple criteria, such as those listed below. Thick: Thickness as stated by manufacturer.