Verified from the manufacturer’s own documentation · last checked September 19, 2026
| Manufacturer | Kolbe |
|---|---|
| Series | Ultra Series |
| Frame material | Aluminum-clad wood. Warm wood interior in familiar and exotic species (multiple standard pre-finishes, custom finishes available) with a durable extruded aluminum exterior. Exterior finished with a 70% PVDF fluoropolymer coating meeting AAMA 2605 |
| Styles / configurations | Double-hung (Sterling, Traditional, Majesta and Replacement variants), casement (crank-out and push-out), awning (crank-out and push-out), sliding (single, double, triple and quad), radius and round windows, direct set / picture, corner windows, geometric and specialty shapes; also Ultra Series entrance doors, inswing/outswing French, sliding, terrace, lift & slide, folding, and commercial doors. Impact units for hurricane-prone coastal areas meet IDP4. Confirm the current Ultra Series style range on Kolbe's pages |
| Glass options | Multiple insulating-glass packages, double or triple pane, matched to climate zone. Standard Low-E insulating glass with a stainless-steel spacer bar. Push-Out EP (Energy Performance) options with triple-pane glass. Impact-resistant options available for coastal projects |
| U-factor | Not published as a single line-wide range; performance follows the style and glazing package. Check the NFRC label on the exact unit quoted |
| SHGC | Not published as a single line-wide range; follows the glazing package. Check the NFRC label on the unit quoted |
| VT | Not publicly specified |
| ENERGY STAR | Kolbe states many Ultra Series products meet or exceed ENERGY STAR guidelines in most climate zones with the right glass package |
| NFRC certification | NFRC-certified performance follows the configuration. Standard Low-E insulating glass with a stainless-steel spacer bar carries a 20-year warranty per Kolbe's product pages |
| Warranty | Kolbe Window and Door Express Limited Warranty (effective November 21, 2025), which covers Ultra Series. Extends to all first end users and transfers to later owners for the remaining term. General product: 10 years. Insulated glass seal: 20 years up to 60 sq ft (replacement glass only), 10 years at 60 sq ft and larger; non-tempered stress cracks: 5 years. Aluminum exterior finish: AAMA 2605 finishes 30 years against cracking/checking/peeling (first 20 years full, then prorated), AAMA 2604 finishes 20 years; anodized 10 years; within 5,000 ft of salt water 10 years. Treated wood against decay and termites: 20 years. Hardware: 10 years; interior factory finish: 5 years; weatherstripping, screens and motorized parts: 2 years. Labor and travel are NOT covered. Written claim within 30 days of discovery |
| Positioning | Kolbe's traditional-forward premium clad-wood line — the volume flagship alongside the contemporary VistaLuxe Collection. Kolbe positions Ultra Series as versatile from traditional to modern architectural details, with the widest product breadth in Kolbe's catalog (50+ standard exterior colors, 20+ standard interior pre-finishes) |
| Price position | Premium / luxury; volume flagship of Kolbe's clad-wood range |
| Installation | Residential new construction, remodeling and replacement, plus commercial applications; custom, made-to-order through Kolbe dealers. Kolbe holds Forest Stewardship Council Chain-of-Custody certification |
Notes
Aluminum-clad wood. Warranty re-checked September 19, 2026 against Kolbe's November 2025 Express Limited Warranty: the '30-year finish' is prorated after year 20 and applies to AAMA 2605 finishes; glass term depends on unit size; transferability confirmed; labor excluded. Performance data is style- and glazing-specific — check the NFRC label
Sources
Kolbe's own Ultra Series pages — kolbewindows.com/ultra and per-style Ultra pages (Ultra Radius, Ultra Corner, Ultra Quad Sliding, Ultra Push-Out Awning, Ultra Commercial) for material (extruded aluminum exterior + wood interior), wood species, sizing, hardware and impact performance (IDP4); Kolbe Ultra Series 2023 overview brochure (buildersshow.com/…/ExhibitorProductLit_100598_UltraSeriesOverview_2023.pdf) for the 70% PVDF fluoropolymer coating with up to a 30-year warranty, and the 50+ exterior / 20+ interior finish palette; Kolbe historical Ultra Series general literature; product pages state a 20-year warranty on standard Low-E insulating glass with a stainless-steel spacer