The No 7159M full mortise Entry lockset, recommended for coastal residences and yachts, features all-stainless steel construction for corrosion resistance. Available in 2-1/2 or 2-3/4 backsets, it incorporates an adjustable bevel faceplate and a three piece anti-friction latch. This lockset is suitable for doors 1-3/4 thick or greater, and has a faceplate measuring 8 x 1-1/4. A stainless steel strike plate and metal dustbox are provided. The lockset can be delivered with any Nanz handle, thumbturn, and cylinder. All finishes are available. This lock is UL Listed and has a 3 hour fire rating.