MB-86N ST
Standard insulation. Insulating strips without extra filling. In the Netherlands, for most homes with HR++ double glazing, this is the version that meets the energy calculation.
Aluprof · Aluminium
Aluprof MB-86N
The best-insulating profile we supply: Uf 0.57 W/m²K, in any RAL colour.
Made to measureto the millimetre
Quote within 3 working daysfor your sizes, with no obligation
Delivery to the UKquoted with your offer
Size guarantee ±2 mmsupplied as ordered
Aluprof MB-86N
With Uf 0.57 W/m²K, the MB-86N is the best-insulating profile in our whole range — uPVC and aluminium taken together. 77 mm frame depth, 122 mm sightline, maximum size 6,000 × 3,000 mm. Aluminium is powder coated, which means you are not tied to a foil colour chart: any RAL colour is possible.
Detail drawings
The manufacturer's drawings, for each version of this profile. They are on the page itself; you can download the PDF below.
Fixed light
Glass directly in the frame, 59 mm of profile in view. For a fixed section next to a door, a top light or a large picture window that doesn't need to open.
frame 77 mm deep · sightline 59 mm · glazing bead 25 mm · glass 4-16-4
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Tilt and turn window
Turn it inwards to clean the outside, tilt it to ventilate. An 86 mm deep sash in a frame with rebate; together 122 mm in view.
sash 86 mm deep · sightline frame + sash 122 mm (84 + 39) · glazing bead 16 mm
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Door
Front door, back door or garden door, opening inwards or outwards, with a 10 mm aluminium sill. Also as a double door.
frame 77 mm · total 180 mm (frame 80 + door leaf 100) · overlap 20 mm
Request my quote26 layouts in Aluprof MB-86N
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.
Windows
Single fixed window in Aluprof MB-86N
Standard size 1,500 × 1,500 mm
Windows
Window with a dummy sash in Aluprof MB-86N
Standard size 1,500 × 1,500 mm
Windows
Inward-opening casement window in Aluprof MB-86N
Standard size 1,000 × 1,400 mm
Windows
Bottom-hung tilt-in window in Aluprof MB-86N
Standard size 1,100 × 800 mm
Windows
Fixed window with top light in Aluprof MB-86N
Standard size 1,000 × 1,800 mm
Windows
Fixed window with tilt-in top light in Aluprof MB-86N
Standard size 1,100 × 1,800 mm
Windows
Tilt and turn with hopper top light in Aluprof MB-86N
Standard size 1,100 × 1,800 mm
Windows
2-pane fixed window in Aluprof MB-86N
Standard size 1,800 × 1,500 mm
Windows
2-pane window, 1 tilt and turn in Aluprof MB-86N
Standard size 1,800 × 1,500 mm
Windows
2-pane window, 2 tilt and turn in Aluprof MB-86N
Standard size 1,800 × 1,500 mm
Windows
French casement window in Aluprof MB-86N
Standard size 1,600 × 1,500 mm
Windows
3-pane fixed window in Aluprof MB-86N
Standard size 2,400 × 1,500 mm
Windows
3-pane window, 1 tilt and turn in Aluprof MB-86N
Standard size 2,400 × 1,500 mm
Windows
3-pane window, 2 tilt and turn in Aluprof MB-86N
Standard size 2,400 × 1,500 mm
Windows
3-pane window, 3 tilt and turn in Aluprof MB-86N
Standard size 2,400 × 1,500 mm
Windows
4-pane fixed window in Aluprof MB-86N
Standard size 3,200 × 1,500 mm
Windows
4-pane window, 1 tilt and turn in Aluprof MB-86N
Standard size 3,200 × 1,500 mm
Windows
4-pane window, 2 tilt and turn in Aluprof MB-86N
Standard size 3,200 × 1,500 mm
Windows
Tilt and turn window with top light in Aluprof MB-86N
Standard size 1,200 × 1,800 mm
Doors
Single front door in Aluprof MB-86N
Standard size 1,000 × 2,100 mm
Doors
Front door, side panel left in Aluprof MB-86N
Standard size 1,450 × 2,100 mm
Doors
Front door, side panel right in Aluprof MB-86N
Standard size 1,450 × 2,100 mm
Doors
Front door with two side panels in Aluprof MB-86N
Standard size 1,850 × 2,100 mm
Doors
Glazed back door in Aluprof MB-86N
Standard size 1,000 × 2,100 mm
Doors
French doors in Aluprof MB-86N
Standard size 1,600 × 2,200 mm
Windows
Single tilt and turn window in Aluprof MB-86N
Standard size 1,200 × 1,400 mm
What comparable projects cost
How much does an Aluprof MB-86N window cost?
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.
The price of an MB-86N window depends on four things: the overall size, the layout (fixed, tilt and turn, door), the glass and the colour. If there is an amount above this block, it is a guide price from our quote history — not a quote and not a final price; the configurator itself shows no price. You put your window together, send it as a request, and the price for your sizes is in your offer — you'll hear from us within three working days. Prices in GBP, excl. UK VAT and import duties, which are payable on delivery. Delivery to the UK is quoted with your offer; hardware and any discount are itemised there too. We supply, we don't install, and installation is not in any price of ours.
Configure and request a quoteAluprof MB-86N cross-section — with and without rebate
This is the Aluprof MB-86N cut through at true scale. You are looking at 77 mm of frame depth — the distance from inside to outside — with an 84 mm frame width and 122 mm of it visible from inside. That last figure decides how much glass is left: the narrower the sightline, the more light.
Fixed light — without rebateK52 8611 X
frame 77 mm deep · sightline 59 mm · glazing bead 25 mm · glass 4-16-4
The glass sits directly in the frame, held by a glazing bead on the inside. This is the slimmest version: 59 mm of profile in view, the rest is glass. Choose it for a fixed section next to a door, a top light or a large picture window that doesn't need to open.
Fixed light — with rebateK52 8651 X
frame 77 mm deep · sightline 84 mm (59 + 25) · glass 4-16-4
The same frame, but with a 25 mm rebate. You choose this when the fixed section is in one frame with an opening sash, so that frame and sash look equally wide all round.
Tilt and turn window, inward opening — with rebateK52 8651 X + K52 8711 X
sash 86 mm deep · sightline frame + sash 122 mm (84 + 39) · glazing bead 16 mm
The sash (86 mm deep) closes into the frame's rebate. Together 122 mm in view. This is the usual version for a window that has to open: turn it inwards to clean the outside, tilt it to ventilate.
Tilt and turn window, inward opening — without rebateK52 8611 X + K52 8711 X
sightline frame + sash 97 mm (59 + 39)
The same sash in the slim frame: 25 mm less profile in view. The rebate seal then sits on the sash instead of on the frame.
Inward-opening door — with rebateK52 8746 X + K52 8744 X
frame 77 mm · total 180 mm (frame 80 + door leaf 100) · overlap 20 mm
Horizontal section through the hinge side. The door leaf shows 100 mm and has a heavier profile than a window sash, because it has to take a lock and three hinges.
Inward-opening door — without rebateK52 8730 X + K52 8744 X
total 150 mm (50 + 100)
The same door leaf in the slim frame: 150 mm instead of 180 mm.
Outward-opening door — with rebateK52 8744 X + K52 8746 X
total 180 mm (80 + 100)
The same profiles, mirrored: the leaf closes against the outside of the frame. In the Netherlands this is the usual opening direction for a back door.
Outward-opening door — without rebateK52 8731 X + K52 8746 X
total 150 mm (50 + 100)
Slim version of the outward-opening door.
Sill, aluminium threshold — inward-opening doorK52 8744 X + K52 8770 X + K43 2233 X
threshold 10 mm high · door leaf 100 mm · total 110 mm
Vertical section at the foot of the door. The aluminium threshold is 10 mm high: low enough to roll over, high enough to keep rainwater out. The plastic thermal break in the threshold (K43 2233 X) stops the cold bridge.
Sill, aluminium threshold — outward-opening doorK52 8746 X + K52 8770 X + K43 2233 X
threshold 10 mm · total 110 mm
Same threshold, outward-opening leaf.
Window, sash in frame — MB-86N SIK431623X · K528702X + 2× 127349 · K528612X + 127353
sightline frame + sash 114 mm · sash 86 mm
Aluprof's own drawing, showing the insulating strips and foam filling of the SI version. The 114 mm sightline is measured on the profile without the glazing bead rebate; our drawing above, at 122 mm, includes the rebate.
Door, leaf in frame — MB-86N SIK431621X · K528744X + 8G00116X · K528612X + 127353
sightline 149.5 mm · leaf 77 mm
Aluprof's door section, SI version.
Aluprof MB-86N specifications
| Material | Aluminium |
|---|---|
| Uf | 0.57 W/m²K |
| Frame depth | 77 mm |
| Outer frame width | 84 mm |
| Sightline | 122 mm |
| Shape | vlak |
| Maximum size | 6,000 × 3,000 mm |
| Maximum sash width | 1,400 mm |
| Size tolerance | ±2 mm up to 1 m, ±3 mm above that |
Move over the drawing to see the dimensions
Uf 0.57 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 77 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.
MB-86N ST or MB-86N SI?
Aluprof makes the MB-86N in two thermal versions. The profile is the same; the difference is in the insulating strip between the outer and inner shell — the thermal break.
MB-86N SI
Enhanced insulation: wider strips with foam filling in the chambers. This is the version the Uf 0.57 W/m²K belongs to. Choose SI with triple glazing or when the energy performance of the home calls for the lowest Uf.
MB-86N doors SI+
For door leaves only: one step further in insulation. For panel doors on this base the manufacturer gives a Ud from 0.63 W/m²K.
Which version we supply in your size and colour is shown in the configurator under the profile. If only one is listed, that is the version we supply.
MB-86N compared with MB-79N and MB-Ferroline
Same size, same specification. Only the profile differs.
Aluprof MB-86NFrame depth 77 mm · This profile
Aluprof MB-79NFrame depth 70 mm
Aluprof MB-FerrolineFrame depth 110 mm
| Specifications | Aluprof MB-86N | Aluprof MB-79N | Aluprof MB-Ferroline |
|---|---|---|---|
| Material | Aluminium | Aluminium | Aluminium |
| Uf | 0.57 | 0.83 | 1.50 |
| Frame depth | 77 mm | 70 mm | 110 mm |
| Sightline | 122 mm | 128 mm | 97 mm |
| Maximum size | 6,000 × 3,000 mm | 5,000 × 2,700 mm | 6,000 × 3,000 mm |
| Why something else | Same sightline, 7 mm shallower, Uf 0.83 instead of 0.57 and a smaller maximum size. | A sightline 31 mm slimmer — 97 mm — but Uf 1.50 instead of 0.57. It is a design choice, not an insulation choice. |
Side by side, true to scale
The same scale for all three, so what looks deeper here is deeper.
Where does the MB-86N fit?
New build
Suitable, and the obvious choice when the energy calculation calls for the lowest possible Uf.
Renovation
Suitable up to 6,000 × 3,000 mm — larger than any uPVC window system we supply.
Listed buildings and conservation areas
For a listed building or in a conservation area, check with your local planning authority. In the Netherlands, aluminium in a dark RAL colour is found on post-war listed buildings.
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.
Documents: data sheet, brochure, test reports
- Rovenzia data sheetPDF · 2 kB
- Rovenzia data sheet Aluprof MB-86N (PDF)not yet available
Manufacturer's brochure
More documents from Aluprof
Aluprof's own documents. We link to them rather than copying them, so you always see the version the manufacturer currently publishes.
- Product page MB-86N (in Dutch)webpagina
- Aluprof system overview, Dutch edition (PDF, MB-86N on p. 50)PDF
- Cradle to Cradle certificate Aluprof 2024 (PDF)PDF
- SKG test report MB-86N outward-opening door, 23.01073.1 (PDF, in Dutch)PDF
- SKG test report MB-86N inward-opening door, 23.01073 (PDF, in Dutch)PDF
Aluprof provides detail drawings in DWG only to fabricators, through its partner portal.
Made-to-measure quote
Configure and request a quote
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 about the Aluprof MB-86N
Can you deliver this profile to the UK?
Delivery to the UK is quoted with your offer. Aluprof MB-86N 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 6,000 mm wide and 3,000 mm high. The widest opening sash is 1,400 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-86N
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