Designed for hollow metal and storefront doors, Tower is a narrow smart lock with a European mortise lock and a Schlage C keyway Euro profile cylinder. Its slim profile is suitable for doors with a thickness of 1-3/8” to 2-1/2” and four backsets: 28mm, 35mm, 45mm, and 60mm. This dual action lock is also available in a sliding version, commonly used for patio doors with a narrow 35mm backset. With a 304 grade stainless steel body, Tower is available in satin steel and matte black finishes.