Aluprof MB-79N
The entry-level aluminium window profile: 70 mm frame depth and Uf 0.83 W/m²K.
Aluprof MB-79N
The Aluprof MB-79N is the aluminium window profile for when you don't need the extreme of anything, and the simplest aluminium window system we supply: 70 mm frame depth, a 128 mm sightline and windows up to 5,000 × 2,700 mm. With Uf 0.83 W/m²K it already insulates better than any uPVC profile in our range.
Detail drawings
The manufacturer's drawings, for each version of this profile. They are on the page itself; you can download the PDF below.
26 layouts in Aluprof MB-79N
From a fixed window to a sliding patio door: every layout this profile can do, each with its own page and a direct way into the configurator.
What comparable projects cost: Aluprof MB-79N
What comparable projects cost typically £526 to £780 per unit, excl. UK VAT and import duties The spread is too wide for a single amount; this is the range they fell within. for a unit of 1,000 × 1,400 mm measured on 38 quotes from our own archive This is a guide price, not a quote and not a final price. The amount for your own sizes is in the made-to-measure quote, which you request through the configurator.
Request my quoteCross-section
This is the Aluprof MB-79N cut through at true scale. You are looking at 70 mm of frame depth — the distance from inside to outside — with an 83.5 mm frame width and 128 mm of it visible from inside. That last figure decides how much glass is left: the narrower the sightline, the more light.
The glass sits in the frame behind a glazing bead; from inside you see 58.5 mm of profile. This is the drawing used to compare the MB-79N with other profiles.
The same frame with a 25 mm rebate either side of the 33.5 mm core, so that a fixed section next to an opening sash keeps the same sightline.
Frame with rebate and the 79 mm tilt and turn sash: 128 mm visible together — the figure on this profile's card. The 5 mm in between is the gap; the centre seal sits behind it.
The same sash on the frame without rebate: 25 mm less in view, 103 mm in total.
The 75 mm door leaf on the frame with rebate: 163.5 mm visible. Wider than the window sash, because the lock and hinges need more profile.
Opening outwards, the leaf sits in front of the frame; that leaf is 100 mm wide and, on the frame without rebate, comes to 163.5 mm. This drawing is the raw CAD drawing from the archive, in line colours.
The same outward-opening leaf on the frame with rebate: 188.5 mm visible, the widest sightline of this profile. This drawing is also the raw CAD drawing.
Horizontal section through the mullion between two fixed sections: a glazing bead and a 25 mm rebate on each side, the 33.5 mm core in the middle. This is the mullion that divides a wide picture window into two sections.
Vertical section at the foot of the door: the 100 mm leaf closes with a rubber seal onto a 10 mm aluminium threshold, with 4.5 mm of clearance between them. If you don't want a threshold, choose the low sill as an option.
Specifications
| Material | Aluminium |
|---|---|
| Uf | 0.83 W/m²K |
| Frame depth | 70 mm |
| Outer frame width | 83.5 mm |
| Sightline | 128 mm |
| Shape | vlak |
| Maximum size | 5,000 × 2,700 mm |
| Maximum sash width | 1,350 mm |
| Size tolerance | ±2 mm up to 1 m, ±3 mm above that |
Move over the drawing to see the dimensions
Uf 0.83 W/m²K is the heat loss through the profile, not through the whole window. How well the finished window insulates also depends on the glass (Ug) and on the ratio of profile to glass area; that combination is called Uw, and it comes out of the configurator, not out of this table. The 70 mm frame depth decides how far the frame sits into the reveal — measure that before you order.
This is a schematic cross-section, built from the measured frame depth, frame width and sightline. The chamber layout, seals and reinforcement are not measured — they come from the supplier's technical drawing.
Compared with other profiles
Same size, same specification. Only the profile differs.
| Specifications | Aluprof MB-79N | Aluprof MB-86N | Gealan S 9000 Slim |
|---|---|---|---|
| Material | Aluminium | Aluminium | uPVC |
| Uf | 0.83 | 0.57 | 1.10 |
| Frame depth | 70 mm | 77 mm | 82.5 mm |
| Sightline | 128 mm | 122 mm | 119 mm |
| Maximum size | 5,000 × 2,700 mm | 6,000 × 3,000 mm | 3,200 × 3,200 mm |
| Why something else | Same sightline and same frame, but Uf 0.57 instead of 0.83 and a maximum size of 6,000 × 3,000 mm. | uPVC: a 119 mm sightline instead of 128 mm, but Uf 1.10 instead of 0.83 and much smaller maximum sizes. |
Side by side, true to scale
The same scale for all three, so what looks deeper here is deeper.
Use
New build
Suitable. Aluminium is the usual choice once openings get larger than uPVC can handle.
Renovation
Suitable, and at 5,000 mm wide it goes further than the uPVC window systems.
Listed buildings and conservation areas
For a listed building or in a conservation area, check with your local planning authority. Aluminium with a slim sightline is sometimes accepted where uPVC is not.
Standards and Building Regulations in the UK
In the Netherlands, quality assurance for windows and doors runs through KOMO. It is not a standard but a quality declaration: a certification body assesses a manufacturer against an assessment guideline — for uPVC windows and doors that is BRL 0703 — and then issues a product certificate. What is certified is not only the finished product but also the production and the manufacturer's own quality control. KOMO is a Dutch scheme, not a UK approval.
SKG is the Dutch mark for burglar resistance. SKG stars are awarded to the hardware, not to the window or door. The European measure behind it is resistance class RC2 to EN 1627, and that class applies to the complete unit, including the hardware and including the way it is fixed into the wall. A unit tested as RC2 but fitted badly is no longer an RC2 unit. SKG and RC2 are not UK security certifications, and we don't present them as such.
We supply, we don't install. Whoever fits it, the principle is the same: the opening must allow an airtight, watertight, flat and square joint, and the loads on the unit must be carried into the structure through its fixings. Replacing windows and doors in England and Wales is notifiable building work: an installer registered with a competent person scheme, such as FENSA or Certass, notifies it, or you notify building control before work starts. Because we don't install, this sits with your installer — agree it before you order. Scotland and Northern Ireland have their own rules.
On energy performance: in England, Approved Document L (Volume 1: Dwellings, 2021 edition) sets the limit for a replacement window in an existing home at a U-value of 1.4 W/m²K or WER band B. For a door that is more than 60% glazed the limit is 1.4 W/m²K or DSER band C; for other doors 1.4 W/m²K or DSER band D. A replacement may not perform worse than what it replaces. That U-value is for the whole window or door (Uw). The Uf on this page is the frame profile alone, so it is not the figure Part L asks for; the Uw of your configuration is stated in your offer. We don't claim a WER or DSER band, and we don't give grant advice.
What we do not claim here: that our windows and doors carry KOMO or SKG. Those marks belong to the manufacturer and its production line, and we have not yet asked our suppliers for that information. Once we have it, it will be listed here with certificate number and period of validity. Until then we only say what the marks are, not that we have them.
Downloads
- Rovenzia data sheetPDF · 2 kB
- Rovenzia data sheet Aluprof MB-79N (PDF)not yet available
Manufacturer's brochure
Know what you want? Put it together.
No form first: you watch your window take shape as you choose. The price follows in the quote, within three working days.
Frequently asked questions
Can you deliver this profile to the UK?
Delivery to the UK is quoted with your offer. Aluprof MB-79N is made to order; production time is 6 to 8 weeks. You enter your postcode when you request a quote. The route always ends with a quote request: no guesswork price, but a quote for your sizes.
What sizes can I order?
This profile goes up to 5,000 mm wide and 2,700 mm high. The widest opening sash is 1,350 mm. At the small end: the narrowest section that can be made is 200 mm, the narrowest door section 600 mm, the narrowest side panel next to a door 180 mm, and a door section is never taller than 2,500 mm. The maximum height and the sash width come from Aluprof's brochure for this profile; the maximum width has not yet been confirmed by the manufacturer. If you are close to the limit, ask us.
How long does it take?
Production time is 6 to 8 weeks, the same for all our suppliers (our figure as of 15 September 2026). Delivery to the UK is quoted with your offer. The quote itself is quicker: you'll hear from us within three working days of your request; if it takes longer, you'll hear that within the same three working days, with the date it will be ready.
What exactly will I receive?
What you put together in the configurator is what you get: the profile you chose, in your size and layout, with the glass and colour you picked for it. The summary — the last step before your request goes out — lists line by line what is in your configuration, and anything not listed there isn't included. So you know before you unpack, not after. Delivery to the UK is quoted with your offer.
Do you install it as well?
No. We supply, we don't install. That has one consequence you need to know about: replacing windows and doors in England and Wales is notifiable building work. An installer registered with a **competent person scheme** (FENSA or Certass, for example) notifies it for you; otherwise you notify building control before the work starts. Because we don't install, this is down to your installer — agree it with them before you order. Scotland and Northern Ireland have their own rules.
Which glass and colours can I choose?
We supply six types of glass: HR++ double glazing (Ug 1.1), triple glazing (HR+++, Ug 0.6), obscure glass in double and triple, and P4A laminated safety glass in double (Ug 1.0) and triple (Ug 0.6). For colour there are core colours, dark and other foils for uPVC, and smooth or textured powder coating in RAL colours for aluminium. Which combination is available on this particular profile, the configurator tells you — it refuses a combination that doesn't exist rather than quietly supplying it.
Can I send it back if I change my mind?
No. A window or door built to your measurements is made to measure, and made-to-measure goods fall outside the right to cancel. We tell you that before you order, not in the small print. In return, we take the risk out at the start: a size guarantee, a sample set so you can see the colour in your own light, and a fixed procedure if something is damaged on delivery.
What if something is damaged on delivery?
Check it with the driver before you sign, and have any damage noted on the delivery note. Until the goods are in your hands, transport damage is **our risk**, not yours. If you still find visible damage when you unpack, report it with photos **within two working days of delivery**. That doesn't cover what you *couldn't* see on delivery: for hidden defects your normal statutory rights on faulty goods apply.
Configure your window or door in Aluprof MB-79N
Where we have a guide price, it is on the page, not behind a form — not a quote and not a final price; the amount for your sizes is in the made-to-measure quote.
Request my quote