The short answer
Replacement products are commonly configured for existing openings, while new-construction configurations are commonly integrated with broader opening and wall work. Product labels alone do not choose the method; review the wall, opening, flashing, trim, and project sequence.
- Identify whether cladding or wall layers are already being opened.
- Match product configuration to the planned water-management details.
- Confirm provider support before treating new-construction work as available.
Sources
Sources
- Window Installation — U.S. Department of Energy
- How to Avoid a Home Improvement Scam — Federal Trade Commission