Good Directions 60'' Vinyl Cupola Shiplap Extension Base - 60EXTSLV
60'' Shiplap Base - 60EXTSLV EXTENSION BASE DETAILS: All Cupolas (Except Castle Cupolas) come standard to fit up to a 10/12 pitch roof. An extension base is required to fit a roof greater than a 10/12 pitch. Castle Cupolas come standard to fit up to a 12/12 pitch roof. An extension base is required to fit a roof greater than 12/12 pitch. Follow guidelines below for extension base requirements. Extension Bases Details For All Cupolas (except Castle Cupolas): For up to and including a 10/12 roof pitch, no Extension Base is required For a 12/12 roof pitch, 1 Extension Base is required For a 14/12 roof pitch, 2 Extension Bases are required Extension Bases for Castle Cupolas: For up to and including a 12/12 roof pitch, no Extension Base is required For a 14/12 roof pitch, 1 Extension Base is required For a 16/12 roof pitch, 2 Extension Bases are required