US/Craftmaster age help. I can’t find anything other than the first four numbers are the code. Only that doesn’t make sense in this instance (since 3rd and 4th number would be week 53). Home is 1975 build. It has an energy usage label that wasn’t required until 1980.
Maybe it was a LONG year??? Looked at all my resources and could find no exceptions to the first four digits. Could it possible be the year with day 365 bring the production day, this would be start of week 53?
My first inclination was 2011 but the week “53” didn’t make sense. Actually went to a calendar and checked if there might have been 53 of any particular day in 2011. Nope.
The sample on building center does not have the letter in the middle of the serial number like this one. It looked pretty old but then there was also a fire in this home and it could have been beaten up by the fire dept. and the water they applied.
I just put unknown. Will call the mfr. on Monday and see what they say. Will advise after that.
Many companies end their accounting periods on the last day of each month, but some companies, usually in manufacturing (such as water heaters) close on the Saturday closest to the end of the month. Thus they keep comparisons consistent: 4 weeks per month, 13 weeks per quarter, 52 weeks per year. However, that amounts to only 364 days for a 52 week year. Because of the extra day each year, and then another for a leap year, every 3 or 4 years, they end up with 53 weeks in the year in order to still close on the Saturday NEAREST the end of the month, which, of course, messes up their comparisons anyway.
So, does 2011 have 53 weeks? Possibly and probably since 2008 was a leap year.
Usually it doesn’t matter because many businesses are closed that last week of the year, so no one ever knows that it was week 53 instead of week 52.