Signature Narrow-Frame Cornerless Window 80
An all-aluminum corner unit with no vertical post at the junction, on the narrow-frame 80 platform. Fixed or with an operable leaf on one side; used to open a corner room to two aspects at once.
Configure your unit, then request a quote — we price it and reply, usually within one business day.
Every unit is made to the opening. Sizes confirmed at quotation.
Low-E1 / E2 / E3 coatings, laminated and tempered build-ups available. We recommend the coating for your climate zone.
Full RAL range on request; the twelve most-ordered colours are listed. Powder coat or anodised.
No price is shown because every unit is made to order. You will get a written quote for exactly this configuration.
Overview
An all-aluminium corner window on the narrow-frame 80 system: two glass planes meeting at the corner with no post between them, the junction formed at 45°. It is used where the corner of a room should open to two aspects at once — clear sightlines from more than one direction, and, in a stacked assembly over several storeys, a corner that becomes the building's defining elevation rather than a place where two walls meet.
The narrow-frame line has two products and they answer different questions. The Tilt Turn (80) is the operable one, with a flush frame-to-sash face, a 9/16" visible frame and a concealed Sobinco hinge; this is the geometry one, and it exists to remove a corner post rather than to ventilate. Both sit on the same 80 mm system, so the two can run in the same elevation on one sightline. Where the same corner is wanted in clad timber instead of aluminium, the equivalent is the wood-clad Cornerless (E80).
Unlike most units in the range, this one has its glazing specified rather than left to the general menu: fully tempered double glazing built as 12 mm glass, a 15 mm argon-filled cavity and a second 12 mm pane, with an advanced low-e coating on a warm-edge spacer. Thermal separation across the aluminium is by multi-chamber PA66 nylon barrier strips, and the exterior is available in nineteen extruded aluminium colours including three pearlescent finishes, with custom matching on request. Both an open, folded corner and a closed corner are shown as buildable configurations.
| Product line | Signature |
|---|---|
| Material | Aluminum |
| Type | Window |
| Platform | 80 |
| Lead Time | Standard configurations: 18 days in the factory |
Project references
Buildings carrying this line.
Specifications
| Material | Aluminum |
| Platform | 80 |
The platform number is a nominal frame depth in millimetres — contact us for the exact measured section before you detail the opening.
Frame profile & section
Values not listed are pending the manufacturer’s certified test report and are deliberately left blank rather than estimated.
Mounting and frame options
The frame type decides the rough-opening detail, the flashing and how much of the existing wall has to come out. Four are available; tell us the wall build-up and we will specify which one your opening needs.
The standard new-construction frame. The flange laps the sheathing so the unit sets and seals in one operation.
A 1 3/8" flange is available where the cladding build-up needs the extra reach.
Installs over an existing aluminum window frame, so the stucco exterior is left intact. No cutting back and repatching.
Available on selected window types — ask us which of your openings can take it before you price the stucco work.
For full removal, when the existing frame is rotten or damaged and has to come out entirely.
Sets into the existing rough opening, and arrives with the through-the-jamb holes pre-drilled and the screws supplied.
Straps fix to the frame, which lets the unit sit anywhere in the depth of the wall cavity rather than at a fixed setback.
Installs from the interior, and works for both new construction and replacement.
Full CAD details for any of these are available on request for your wall assembly.
Factory-joined combinations for large openings
Multi-unit combinations are joined in the factory and delivered as one assembly, so the joint is made under shop conditions instead of on a scaffold. The joining mullion is 1 1/8" (28 mm) wide and comes in three reinforcement grades, chosen by the height of the window it has to carry. The system is covered by a US patent.
| Suggested window height | Joint width |
|---|---|
| up to 9 ft | 1 1/8" (28 mm) |
| 9 to 11 ft | 1 1/8" (28 mm) |
| 11 to 13 ft | 1 1/8" (28 mm) |
Combinations arrive partly or fully assembled depending on size and shipping method. Tell us the opening and we will confirm which grade your height needs and how the unit will be split for transport, before you price the crane time.
How large combinations are joined →Installation details
Timber frame, masonry and board substrates, plus the splice joint used to ship large units in sections. Full CAD details on request.
Installation methods explained →Performance & Certifications
Values not listed are pending the manufacturer’s certified test report and are deliberately left blank rather than estimated.
Warranty
Our products are certified to:
Certificate numbers available on request.
VERIFIABLE NOWCPD DRN-M-8 · DRN-M-11 · DRN-M-15 · DRN-M-19 · DRN-M-21Search any of these at nfrc.org and you will read the same figures we publish.
Options
Finishes
Powder-coat finishes to the standard RAL card, plus anodized options. Wood interiors are available in several species and interior finishes.
Glazing
- Double- or triple-pane insulated glass
- Low-E1 / Low-E2 / Low-E3 coatings
- Argon fill
- Tempered and laminated build-ups
- Custom interlayer colours and patterns
Exterior finish
The exterior is extruded aluminum cladding, which is why the finish schedule matters more here than the colour chart on a vinyl window: it is a powder coat on structural extrusion, not a surface tint.
19 finishes are available in total, including three pearlescent. Twelve are named here; ask us for the rest, or for a custom colour match.
Swatches are indicative only — reproduced from print, shown on your screen. Specify by RAL number, and ask us for a physical sample before you commit an elevation to a colour.
Lead Time
- Standard configurations, such as a 70-series double-glazed unit: 18 days in the factory from order. This is production time and does not include shipping.
- Special configurations: 3–5 weeks in production, also from order.
- Ocean freight: about 35 days to the U.S. West Coast, about 45 days to the East Coast.
- Schedules are confirmed in writing at order. We build to your project timeline.
Downloads
Drawings & documentation
CAD window and door schedules, BIM models, performance documentation and installation details are prepared per project for trade accounts.
Request documentation →From our projects
Read all reviews →Customer statements from installed projects, quoted unedited.
“The windows have been a really positive experience. We like them a lot, And they seem really well made.”
“The windows are exactly what I am looking for and the quality is more than perfect. Thanks for your help.”
“Your windows are with very good quality and nice looking, and over all it is a great investment for us, thank you very much for your support.”
“Everything has been great so far! The team has had no issues installing which has allowed us to be ahead of schedule.”
