Get the door right
the first time
Most door orders go wrong on the size, the fire rating, or the parts nobody mentions — the lining, the latch, the hinges. We show you all of it before you buy.
- Sizes
- Imperial and metric
- Ratings
- FD30 and FD60
- Guidance
- Written by people who fit them
Start with the door you're picturing
Every door drawn to its real geometry, so you can tell them apart before you click.
Three things that go wrong, in order
- 01
The opening is never square
Measure the width at the top, middle and bottom, and take the smallest. Older houses move; a 3mm difference decides whether the door shuts.
How to measure → - 02
Imperial and metric are not interchangeable
A 762mm door is 78" x 30". A 2040 x 826mm metric door is not a substitute for it, and no amount of trimming makes it one.
UK door sizes → - 03
You cannot trim a fire door to fit
Every door has a stated trimming allowance, and on a rated door exceeding it voids the certification. Check before you order, not after.
Trimming allowances →
Popular doors
See all internal doors →Oak 4-Panel Internal Door
A traditional four-panel oak door with raised mouldings — the default choice for Victorian and Edwardian houses, and the one most people picture when they say "oak door".
- Engineered oak
- 35mm
Guide price from£106.80inc VAT11 sizesWhite Primed Shaker Door
Clean two-panel shaker lines in a white primed finish — the most forgiving door in a mixed-age house, and the cheapest way to make a landing look deliberate.
- Primed MDF
- 35mm
Guide price from£50.40inc VAT11 sizesOak Glazed 3-Light Door
Three glazed lights in an oak frame — for borrowing daylight from a hallway into a room that has none of its own.
- Engineered oak
- 35mm
Guide price from£150inc VAT7 sizesFD30 Oak Fire Door
A 30-minute fire door in oak, 44mm thick. Required on doors between a garage and the house, and on habitable rooms off a stairwell in most three-storey homes.
- Engineered oak
- 44mm
- FD30
Guide price from£174inc VAT4 sizes
Tell us the opening. We'll tell you the door.
Measure the height and width, and the size finder will show you the standard sizes that fit, the gap on each edge, and whether you need a lining adjustment.