product date codes for closers

RELATED FAQS

Question
Answer
The date is a 4 digit #. The first 2 numbers indicate the week it was made, and the last 2 numbers indicate what year it was made. On most surface mounted closers, the model #,  date code, ...
The Date Code and Closer Size are stamped in the backside of the closer body. Closer Size: If the number is "1", the closer is a 2031 or 5031. If the number is "3", the closer is a 2...
The date stamp on a 4041/4040XP is on the packing nut.  The date will be the week of the year and then the year. EXAMPLE: 10 05 would be week 10 of 2005.  For example see...
The 1370 series closer was discontinued on Oct. 4th, 2008The 1260 closer hole pattern is 9-1/16" x 3/4", which is NOT the same hole pattern as the 1370 closer. The 1260-18QF plate does have the s...
The LCN "Traditional" series closer line was discontinued in 1980.  
The date of manufacture printed on the chassis cover (see below), will determine if you have a revised or old chassis. Chassis manufactured mid-June 2013 will have the new improvements. The first t...
To determine the SC series, measure center to center on the closer body bolt hole mounting pattern and an overall description of the closer and arm. SC91 -- 6-3/8" x 3/4" -- unique arm SC93 -- 9-1...
Closers mounted according to LCN installation instructions require no periodic maintenance or seasonal adjustments.The full line catalog states that no periodic maintenance is required.