Finding an internal door for a doorway measuring 533mm / 21 inch can be frustrating. This size is not quite standard, with 27 inch and 30 inch widths much more common. Express Doors Direct offers an extensive range of 21 inch interior doors. In fact, almost all of our internal door range is available in this size. You'll find premium quality doors at Express Doors Direct that are made from high-quality materials and are available in a variety of glazing and finishes.
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | LPD Doors
533mm / 21"
Unfinished Internal Doors | Climadoor
533mm / 21"
Unfinished Internal Doors | Climadoor
533mm / 21"
Unfinished Internal Doors | Climadoor
533mm / 21"
Unfinished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Climadoor
533mm / 21"
Fully Finished Internal Doors | Deanta Doors
533mm / 21"
Fully Finished Internal Doors | Deanta Doors
533mm / 21"
Fully Finished Internal Doors | Deanta Doors
533mm / 21"
Fully Finished Internal Doors | Deanta Doors
533mm / 21"
Fully Finished Internal Doors | Deanta Doors
533mm / 21"
Fully Finished Internal Doors | Deanta Doors
533mm / 21"
Unfinished Internal Doors | Climadoor
533mm / 21"
At Express Doors Direct, we offer an extensive range of 21-inch internal doors, including high quality pine and oak doors. We're confident our range of internal doors will suit your home decor, as we have a variety of glazing and finishes available to match most projects. Order a premium quality interior door for your home, made from the best materials on offer - with 3-7 working day delivery available on most doors. Browse our selection of 533mm / 21 inch doors and find the perfect door for your home.
The narrowest standard internal door widths sold in the UK start around 457mm (18 inch), with 533mm (21 inch), as stocked on this page, among the more common narrow sizes.
Solid core doors are stocked in the 21 inch (533mm) size, giving better sound insulation and a heavier feel than hollow core doors.
This page doesn't sell doors pre-hung in a 22 inch frame, but a frame can be ordered separately to match a 533mm (21 inch) door.
This page doesn't list a fixed 22 inch bifold panel, but our bifold systems can be configured across a range of opening widths.
Frequently Asked Questions
533mm converts to 20.98 inches, rounded to 21 inches for standard UK door sizing.
533mm ÷ 25.4 = 20.98", rounded up to the nearest whole inch. Every door on this page is listed as "533mm / 21 inch" for this reason. 533mm is a narrow internal door width.
1981mm converts to 77.99 inches, just under 78 inches, the standard height for UK internal doors.
1981mm ÷ 25.4 = 77.99", commonly rounded to 78". This is the standard height paired with every 533mm (21") width door on this page. Product titles list full dimensions as "1981x533x35mm" to reflect both figures.
We don't stock doors cut exactly to 500mm; the closest stocked width is 533mm (21 inch).
500mm converts to 19.69 inches, below most standard UK stock door size. 533mm (21") is the nearest match, priced from £33 to £327 across the range. A 533mm door may be trimmed down to around 521mm depending on the style and specific lippings which vary based on the door you choose, see our door trimming guide.
Proud stockists of....
Bring industrial-inspired design into your home with our collection of heritage steel-look doors. Available in bifold, French and internal door options, these on-trend designs offer the distinctive appearance of traditional steel doors with the practicality of modern materials. Browse our range today and transform your living space with striking heritage style doors.
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