Product category: Trim
Standard Package: Individually packed with trim ring.
Compatible Products: 1830, MS1837, MS1850S(-050), MS1850SN(-050), MS1861, 1875, MS+1890, MS1950(-050), 2190, 2290,4300, 4510, 4530, 4781 w/8650, 4900, 4920AN,1870, 1870HM, 1877 8300, 8400, 8600 w/8650 3080, 3090
Thumbturn Shell: Choice of three finishes: 130 to match Clear Anodized, 313 (Dark Bronze Anodized) or 335 (Black Anodized).
Thumbturn Trim Ring: Furnished. 1/4” thick, suitable for 1-3/4” thick doors. Available by special order for other door thicknesses.
Security Ring: Narrow stile doors require a trim ring to fill the gap remaining between the cylinder shoulder and stile when a standard mortise cylinder is used. If the security of the hardened steel Adams Rite MS4043 Cylinder Guard is not required, this ring may be simply a length of 1.171 I.D. tubing. Its length varies depending on door thickness or cylinder make and number of pins. The specific length required can be quickly determined by the following formula: