Normally, we complete 2-4 windows per day, depending on size and number of divided lites. For example: smaller windows such as 1/1 double hungs ("one over one" - i.e. no divided lites) can be completed at a rate of 3 or 4 per day, sometimes even faster. Larger windows with lots of divided lites are usually completed at a rate of 2 per day. Again, sometimes faster.