Brand
ESW — ES Windows
The first brand documented in our rules engine, starting with the MultiMax series Single Hung. Data is provisional: sourced from real factory documents, pending the official spec sheet — and every check tells you that.
MultiMax Single Hung OX
Provisional data on file| Smallest factory-confirmed size | 20" × 20" (not a guaranteed minimum) |
|---|---|
| Known maximum (provisional) | 53 1/8" × 74 1/4" |
| Verified | 2026-07-11 · SmartWay technical review |
A size inside this envelope shows “Within currently documented limits — manufacturer verification required” — final manufacturability is always confirmed with the factory for your exact size. That distinction is a feature, not a hedge.
Why provisional?
Our data comes from real factory proposals and documents. Until the official manufacturer spec sheet is on file, we keep the status honest — and our checks behave conservatively.
Other ESW series
Elite and other series exist and are never validated with MultiMax data (different series, different limits). They join the builder as their data is transcribed.