Construction Products, Windows, Doors & Fenestration worked example

Window Line Throughput at 95% window line uptime: a worked example

This scenario runs the window line throughput calculation on the strong side: 95% window line uptime, with every other input held at its documented default. checking whether window production can cover backlog or a project delivery date

The inputs for this scenario

  • finished windows per production cycle: 6 windows / cycle (unchanged)
  • planned window production cycles: 92 cycles (unchanged)
  • window line uptime: 95 % (raised for this scenario; the documented default is 83)
  • window first-pass yield: 96 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross window line capacity = finished windows per production cycle × planned window production cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 503 windows for good windows per shift, the number this scenario is built around.
  • At this operating point the engine returns 552 windows for gross window line capacity.
  • At this operating point the engine returns 27.6 windows for windows lost to downtime.
  • At this operating point the engine returns 20.98 windows for windows lost to first-pass yield.

How this compares with the baseline

  • Against the tool's baseline example, where window line uptime sits at 83% and the headline result is 440 windows, this scenario comes in 14.46% above the baseline at 503 windows.
  • Use it when committing ship dates, sizing a shift's labor and glass supply, or sanity-checking whether a window line can absorb a new order without overtime. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • good windows per shift: 503 windows (headline result)
  • gross window line capacity: 552 windows
  • windows lost to downtime: 27.6 windows
  • windows lost to first-pass yield: 20.98 windows

Run it with your numbers

  • Every input above is editable in the live Window Line Throughput calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.