Corbin Russwin CL3810-AZD-613, Grade 2 Passage/Hall/Closet is an economical, Grade 2 standard-duty lever lockset which provides an outstanding combination of value and performance. It's the ideal lever lockset for standard commercial applications. When used in conjunction with the CL3300 Series Extra Heavy-Duty and the CL3500 Series Heavy-Duty Cylindrical Lever Locksets, the overall cost of many projects may be reduced without compromising functionality and durability. Typical applications include, Interior offices, closets, multi-family housing, restaurants, and retail complexes. Non-handed solid cast levers with independent return springs feature the Lever Release design for vandal resistance, allowing the outside lever to rotate when in the locked position. Through-bolts on door for solid attachment. ANSI/BHMA Certified A156.2 Series 4000, Grade 2. UL 3-hour fire rating. Letter “F” and UL symbol on latch front indicate listing. Five-year limited warranty.