MB-Ferroline Pro steel-look window
System cross-section
Photos are illustrative and not necessarily this exact system.
Aluminum · No. 04 · Heritage
The steel window, rebuilt for a wet climate.
U-factor from 0.14 · RC2 security option · Steel look
Black steel windows with thin bars are one of the best-looking things you can put in a wall, and one of the worst performers in a Seattle winter: cold frames, condensation, rust. MB-Ferroline Pro keeps the look and drops the problems. It's thermally broken aluminum, shaped to imitate steel sections, built on the technical base of the MB-86 system.
Two profiles, two characters
- Ferroline Industrial: narrow and lean, the look of factory and loft windows.
- Ferroline Steel-look: a wider, stepped face that gives the impression of depth, like traditional rolled-steel sections.
Divided lites, slim mullions and dark finishes complete the look.
Made for renovation
Renovation frames let new windows go in over the old frame without tearing out the surrounding wall, so plaster and masonry stay intact. The visible frame width is tuned so the new window looks close to the original from outside. Ask us whether a renovation frame suits your house.
Everyone loves the steel look until they see the condensation. This is the fix.
Performance behind the look
Two thermal levels (ST and SI), glass up to 61.5 mm, windows up to about 9.5 feet tall, and burglar resistance up to RC2 class (a European security class). It opens inward (turn, tilt, tilt-and-turn) or outward (side-hung or top-hung), or stays fixed.
MB-Ferroline Pro specifications
Why choose it: most convincing steel look in our range · renovation frames · inward or outward opening.
Trade-offs: costs more than plain aluminum · bars and divided lites add cost and some frame area · NFRC rating: ask us for current status for your project.
SlimLine Elite · MB-Slimline · Steel-look guide
Is it real steel?
Can it replace windows in a historic building?
What is RC2?
Renovating steel windows?
Send photos of the existing windows and a close-up of the frame. We'll suggest a profile.
Specifications
Performance
- U-factor
- from 0.14 Btu/h·ft²·°F
- SHGC
- 0.09–0.38
- Sound
- up to 47 dB (European Rw, not STC)
- NFRC rating
- Ask us for current status for your project
- Security
- Up to RC2 (European burglar-resistance class)
Construction
- Base
- MB-86 technology; ST and SI thermal versions
- Glass thickness
- up to 61.5 mm
- Max height
- about 9.5 ft
Options
- Profiles
- Industrial, Steel-look
- Opening types
- Inward turn/tilt/tilt-and-turn, outward side-hung/top-hung, fixed
- Renovation frames
- Ask us whether one suits your house
- Colors
- Powder coat; black, bronze and RAL
Ordering
- Lead time
- 3–4 months; made to order and shipped by sea freight
- Warranty
- 20-year limited manufacturer warranty; 3-year installation warranty. See warranty terms