The American Eagle 7100 Series features a full rack and pinion construction, heavy duty cast iron closer body, forged steel main arm and full architectural cover. Hydraulic control is accomplished through separate hex key non-critical sweep, latch and backcheck valve adjustments. A Backcheck positioning valve provides consistent backcheck range on parallel arm applications. Optional delayed action (in lieu of backcheck) is effective from maximum opening to approximately 70 degrees. Closers are non-handed, suitable for regular, top jamb and parallel arm applications and come with fasteners for wood and metal doors and frames. Sex nuts and bolts are also furnished standard. Spring adjustment is provided throughout a range of sizes 1-6 and is capable of meeting barrier free force restrictions. All products carry a 25-year manufacturer’s limited warranty. The 7100 performs to the requirements of ANSI A156.4 Grade 1.