Flannery is the premier manufacturer of Specialty Aluminum Trims for several different wall systems. Our aluminum extrusions are built to accommodate Drywall, Stucco, Cement Panels, Millwork Panels and Composite Siding Systems. Whether it is an interior or exterior wall system, Flannery provides the right trims for the job. Flannery has provided quality trims for both residential and commercial construction since its inception. Founded in 1975, Flannery remains a family owned & operated company.