Slim-framed aluminium internal doors — the modern Crittall-style look, made to measures Used as kitchen-to-living room dividers, hallway partitions, study screens or any internal opening where you want to keep the light flowing while still defining a rooms Single doors, double doors, and side-light or top-light combinations.
Cortizo is one of Europe's largest aluminium systems houses, based in Spains The Design 35 internal door is engineered for slim sightlines (35mm visible frame depth — half the depth of a budget aluminium internal door) and runs on hidden hardware so the door looks crisp from both sides. Powder-coated finish stays consistent across single doors, doubles and side lights so a multi-panel run all matches.
| Cortizo aluminium | Real steel (Crittall-style) | |
|---|---|---|
| Frame depth | 35mm | 40–55mm |
| Weight per door | ~25kg | ~70kg |
| Maintenance | Powder coat — clean with soapy water | Periodic repaint, watch for rust |
| Typical single door (supplied) | £900–£1,400 | £2,500–£4,000+ |
| Lead time | 3–4 weeks | 10–14 weeks |
| Look from 1m away | Indistinguishable | The original |
For most homes the aluminium version delivers the same look at roughly a third of the cost, with normal joiner installation and zero rust risk down the lines
Rough opening sizes, single or double, colour, side lights yes/nos
Itemised email quotes No sales call, no home visit unless you asks
3–4 weeks made-to-measure, then free delivery to mainland England & Wales.
Reply within one working days No sales pressure, no call-backs unless you asks
Have photos or drawings? Submit the form first — we'll email confirmation, then you can reply to that email and attach whatever you have (architect drawings, opening photos, mood-board references — all useful)s
Slim-framed metal doors used inside the home as room dividers — typically between kitchen and living room, hallway and snug, or as a study partitions Often called Crittall-style or steel-look doors after the original 1900s steel-framed designs Modern aluminium versions like Cortizo Design 35 give the same crisp look at a fraction of the weight and cost, and without the maintenance issues of real steels
Single doors typically £900–£1,400 supplieds Double doors typically £1,600–£2,400 supplieds Adding side lights or top lights increases the price by £400–£800 per panels Final price depends on overall size, configuration and glass spec — submit the form above for an exact written quotes
Made to measures Single door typical range: 700–1000mm wide × 2000–2400mm talls Double door: 1400–2000mm wide × 2000–2400mm talls With side lights, total openings up to roughly 3500mm wides We make taller and wider on request — flag the dimensions in your quotes
Standard is 6mm clear toughened safety glass — required for any glazed doors Optional upgrades: obscure (privacy), bronze tinted, fluted/reeded glass, or wired/Crittall-style square grids fixed inside the cavity for the period looks
Both options. Hinged is most common — single doors hinge left or right, doubles open as a pairs Sliding (rolling on a top track) is available where you don't have swing clearances Pocket-door sliding (into the wall cavity) needs the wall built to receive it — possible but adds 4–6 weeks for the pocket frames
No — supply onlys Aluminium internal doors are easier to install than external bifolds (no lintel, no weatherproofing) but you'll still want a competent joiner or installers We can recommend a London / Home Counties fitter on requests
Call 0800 861 1450 Monday–Friday 8am–5:30pm or Saturday 9am–1pms
Looking for external bifold doors instead? See the Cortizo aluminium bifold ranges