ADVANCED ENGINEERING - 2 products in 1. Combines a heavy duty hinge and door closer in 1 product with option to add a hold open to hinge. FULLY ADJUSTABLE - Complete adjustability of closing force and closing speed. Set it to close exactly how you need. DURABLE - Stainless steel construction, no hydraulics, no leaking oil. Fully weather resistant. 1,000,000 cycles tested to provide many years of maintenance free operation. VERSATILE - Suitable for fire-rated metal doors, interior wood doors, frameless glass openings and gate applications. Maximum loading up to 440 pounds ( 200kg). Fitting for concealed doors, interior and exterior swing doors of all kinds. COMPLIANT - ADA, UL Listed R26997, ANSI/BHMA A156.17 Grade 1.