Corbin Russwin CL3557-NZD-612-KR-B238, Grade 1 Storeroom is ideal for commercial, institutional, and multifamily applications such as, interior offices, apartment complexes, convalescent and elderly care facilities, hotels, restaurants, and retail centers. Non-handed solid cast levers with independent return springs prevent lever sag. The through-bolted cylindrical chassis prevents rotation and ensures proper alignment. ANSI Grade 1 certification. ANSI/BHMA Certified A156.2 Series 4000, Grade 1, and meets A117.1 Accessibility Code. Seven-year limited warranty.