The Sun-Tek Self Flashing Aluminum (SFA) model allows for placement of drywall inside of the curb. Note that the base is one solid piece of aluminum--it can't possibly leak! Foam insulation, designed to provide thermal protection, is built into this model as well.

Features:

• Allows for placement of drywall inside of the curb
• Completely Assembled
• For use on composition or asphalt shingle roofs only