PERLOK TERMINATION BARS are designed to terminate membrane at parapet walls and other penetrations. PERLOK TERMINATION BARS are 1-inch wide, heavy-duty metal strips with pre-punched holes that come spaced on 6, 8 or 12-in centers. Termination Bars are available in extruded aluminum (6063 T6 alloy) or stainless steel (#304 alloy).