Construction Products, Windows, Doors & Fenestration worked example

Window Unit Cost at 110% window cost scope included: a worked example

This scenario runs the window unit cost calculation on the strong side: 110% window cost scope included, with every other input held at its documented default. pricing a window order, checking product-line margin, or comparing frame/glass/package options

The inputs for this scenario

  • window units in the order: 120 windows (unchanged)
  • fully burdened cost per window: 385 $ / window (unchanged)
  • window cost scope included: 110 % (raised for this scenario; the documented default is 100)
  • fixed project, engineering, and freight adder: 4,200 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable window unit cost = window units in the order × fully burdened cost per window × window cost scope included) to the inputs above produces each figure below.
  • At this operating point the engine returns 55,020 $ for total window order cost, the number this scenario is built around.
  • At this operating point the engine returns 459 $ / piece for cost per window.
  • At this operating point the engine returns 50,820 $ for variable window unit cost.
  • At this operating point the engine returns 4,200 $ for fixed project, engineering, and freight adder.

How this compares with the baseline

  • Against the tool's baseline example, where window cost scope included sits at 100% and the headline result is 50,400 $, this scenario comes in 9.17% above the baseline at 55,020 $.
  • Use it when bidding a fenestration package, quoting a window order, or comparing suppliers on a per-opening basis. 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

  • total window order cost: 55,020 $ (headline result)
  • cost per window: 459 $ / piece
  • variable window unit cost: 50,820 $
  • fixed project, engineering, and freight adder: 4,200 $

Run it with your numbers

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

Last reviewed 2026-05-12.