Specifications & Testing Data
| Frame material | Wood interior, extruded aluminum-clad exterior |
|---|---|
| U-factor (NFRC) | 0.24 – 0.3 |
| Solar heat gain coefficient (NFRC) | 0.22 – 0.33 |
| Design pressure (DP) rating | Engineered per unit — large/custom units carry certified DP ratings on the NFRC/AAMA label |
| AAMA performance class | AAMA 2605 exterior finish (highest-grade architectural coating) |
| ENERGY STAR zones | Northern, North-Central |
| Glass options | Dual-pane Low-E w/ argon, Triple-pane, Tempered, Laminated/sound control, Decorative & divided lite |
| Available styles | Casement, Double-Hung (incl. Next Generation), Awning, Glider, Picture, Round Top & specialty, Corner units, Custom shapes |
Marvin's Flagship, and What That Actually Buys
The Signature Ultimate is the line architects mean when they spec "Marvin" on a drawing set. Solid wood interiors in your choice of species, extruded aluminum cladding outside with an AAMA 2605 finish — the same coating class used on commercial storefronts — and a catalog that treats "custom" as the default: made-to-order sizes, corner units, true curves, and divided-lite patterns that pass for century-old originals.
Energy numbers follow the construction: NFRC U-factors from 0.30 down into the mid-0.20s with triple-pane, SHGC tunable per elevation, and per-unit engineered design pressure ratings for the oversized openings this line exists to fill.
The Three Idaho Jobs That Call for It
Custom and foothills builds. When the plan calls for a 10-foot glass wall, a mulled bank of casements facing the Boise Front, or corner glass — the Ultimate is engineered and rated for it, unit by unit, wind load included.
Historic restoration. North End, East End, Warm Springs, Hyde Park: design review wants profiles, proportions, and divided lites that match the original. The Ultimate's custom sizing and authentic divided-light construction is our standard answer, with modern Low-E performance hidden inside the traditional look.
Statement remodels. The great-room glass on a remodel where the rest of the house gets Elevate — same Marvin exterior palette, so the mixed spec reads as one design.
Honest Counterpoint
Most homes don't need it, and the price gap is real. If the goal is a comfortable, efficient, great-looking whole-house replacement, the Elevate — or the Andersen 400 Series, which we also carry — delivers the numbers for substantially less. Where clients thank us years later for pushing Ultimate is where the window IS the architecture: the openings you see from the street, the glass you look through at the Owyhees every evening.
Warranty and White-Glove Install
Marvin's 20-year glass / 10-year component warranty applies, and the finish carries its own coating warranty. Installation quality matters more on this line than any other — oversized units are unforgiving of out-of-square rough openings — which is why every Ultimate we sell is installed by Wood Windows employees, never subcontractors, and serviced from Garden City for the life of the warranty.
Custom project or restoration in mind? Start with a measure and a real conversation: (208) 376-2200.
Frequently Asked Questions
What makes the Ultimate different from cheaper Marvin lines?
Construction and freedom. The Ultimate is a true wood window — solid wood interior in pine, fir, oak, mahogany and more — protected by extruded aluminum cladding with a commercial-grade AAMA 2605 finish. And nearly everything is customizable: sizes to the sixteenth of an inch, dozens of clad colors, authentic divided lites, corner and curved units the other lines simply don't offer.
How much does the Marvin Ultimate cost?
It's a premium architectural window: most installed configurations in the Treasure Valley run $1,600–$3,000+ per opening depending on size, species, glass, and shape. On custom builds it's typically specified by the architect; on remodels we usually mix it — Ultimate where it shows, Elevate where it doesn't.
Is the Ultimate overkill for a normal Boise home?
For a standard subdivision two-story, usually yes — the Elevate or Essential deliver the same energy performance for much less. The Ultimate earns its cost on custom homes, historic restorations needing authentic profiles and putty-glaze looks, and statement glass: oversized openings, corner windows, curves.
Does Wood Windows install Marvin Ultimate on historic homes?
Regularly. The Ultimate's authentic divided-light options and custom sizing are how we match 1900s-era profiles in Boise's North End and East End while hiding modern Low-E glass inside — the combination historic design review wants to see.
Sources & Testing Data
Last reviewed 2026-07-04 by Wood Windows Inc — (208) 376-2200