838mm or 33 Inch Internal Oak Doors

At 838mm, or 33 inches, this is the widest of the standard internal door widths, made for larger rooms, grander openings and the most generous, accessible clear openings. The range runs across panelled, glazed, cottage and period designs in solid oak, all in the standard 1981mm (78 inch) height, prefinished or unfinished.

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Product Mexicano veneer oak fire door

Mexicano Veneer Oak Fire Door

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£175.95 (inc VAT) £180.95

Lifestyle Mexicano arched square top glazed prefinished blonde oak door installed
Product Mexicano arched square top glazed prefinished blonde oak door

Mexicano Arched Square Top Glazed Prefinished Blonde Oak Door

£315.95 (inc VAT) £330.95

Lifestyle Walden unfinished oak door installed in a home interior
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Walden Unfinished Oak Fire Door

£235.95 (inc VAT) £245.95

Lifestyle Sorrento prefinished oak door shown in a room setting
Product Sorrento prefinished oak internal door front view

Sorrento Prefinished Oak Door

£240.95 (inc VAT) £255.95

Lifestyle Seville prefinished oak glazed internal door installed
Product Seville prefinished oak glazed internal door

Seville Prefinished Oak Glazed Internal Door

£249.95 (inc VAT) £264.95

Lifestyle Seville clear glazed four panel prefinished oak door installed
Product Seville clear glazed four panel prefinished oak door

Seville Clear Glazed 4P Prefinished Oak Door

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£276.95 (inc VAT) £291.95

Lifestyle A light oak wood office or utility door with a silver vertical handle and door stopper, set in a white-walled hallway with a plant and wall outlets visible.
Product prefinished oak flush FD30 fire door on white background

Oak Prefinished Internal Flush FD30 Fire Door

£160.95 (inc VAT) £165.95

Lifestyle Mexicana Ely one lite oak door installed
Product Mexicana Ely one lite oak door

Mexicana Ely 1 Lite Oak Door

£233.95 (inc VAT) £243.95

Lifestyle Augusta prefinished oak door in home interior
Augusta Prefinished Oak Door

Augusta Prefinished Oak Door

£186.95 (inc VAT) £196.95

Product Seville oak door with side panel
Product Deanta Seville prefinished oak FD60 fire door

Deanta Seville Prefinished Oak FD60 Fire Door

£381.95 (inc VAT) £401.95

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Product Kensington prefinished oak fire door

Kensington Prefinished Oak Door

£256.95 (inc VAT) £271.95

Lifestyle solid oak rustic bifold three-ledge V-groove cottage door installed in a home
Product solid oak rustic bifold three-ledge V-groove cottage door

Solid Oak Rustic Bi Fold 3 Ledge V-Groove Profile Cottage Door

£369.95 (inc VAT) £389.95

Lifestyle Severn unfinished oak clear glazed internal door installed in a room setting
Product Severn unfinished oak clear glazed internal door

Severn Unfinished Oak Clear Glazed Internal Door

£353.95 (inc VAT) £373.95

Lifestyle Aria oak laminated internal door installed in a room setting
Product Aria oak laminated internal door

Aria Oak Laminated Internal Door

£269.95 (inc VAT) £284.95

Lifestyle Toledo prefinished oak clear glazed door installed in a room setting
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Toledo Prefinished Oak Clear Glazed Door

£336.95 (inc VAT) £356.95

Lifestyle Toledo three panel prefinished oak door installed in a room setting
Product Toledo three panel prefinished oak door detail view

Toledo 3 Panel Prefinished Oak Door

£230.95 (inc VAT) £240.95

Lifestyle Melbourne prefinished oak internal door installed
Product Melbourne prefinished oak internal door

Melbourne Prefinished Oak Internal Door

£278.95 (inc VAT) £293.95

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London Flat 4P Prefinished Oak FD30 Internal Fire Door

£280.95 (inc VAT) £290.95

Product Lincoln prefinished oak three panel FD30 fire door
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Lincoln Prefinished Oak 3 Panel FD30 Fire Door

£267.95 (inc VAT) £277.95

Product Lincoln prefinished oak internal door
Product Lincoln prefinished oak internal door

Lincoln Prefinished Oak Internal Door

£199.95 (inc VAT) £209.95

Product Vancouver prefinished oak Pattern 10 glazed internal door
Product Vancouver prefinished oak Pattern 10 glazed internal door front view

Vancouver Prefinished Oak Pattern 10 Glazed Internal Door

£320.95 (inc VAT) £335.95

Product Sofia prefinished oak three-light glazed internal door shown front-on
Product Sofia prefinished oak three-light glazed internal door with clear glass panels

Sofia Prefinished Oak 3L Glazed Internal Door

£275.95 (inc VAT) £290.95

Product Sofia prefinished oak FD30 internal fire door front view
Product Sofia prefinished oak FD30 internal fire door with panelled design

Sofia Prefinished Oak FD30 Internal Fire Door

£222.95 (inc VAT) £232.95

Lifestyle Belize unfinished oak 1 light glazed internal door installed in a room setting
Belize Unfinished Oak 1 Light Glazed Internal Door - Main Product Image

Belize Unfinished Oak 1 Light Glazed Internal Door

£168.95 (inc VAT) £178.95

Product Malvern glazed prefinished blonde oak door
Product Malvern glazed prefinished blonde oak door

Malvern Glazed Prefinished Blonde Oak Door

£299.95 (inc VAT) £314.95

Lifestyle Vancouver prefinished oak FD60 internal fire door alternate room view
Lifestyle Vancouver prefinished oak FD60 internal fire door shown in an interior

Vancouver Prefinished Oak FD60 Internal Fire Door

£438.95 (inc VAT) £458.95

Product Mexicano arched square top prefinished blonde oak door
Product Mexicano arched square top prefinished blonde oak door

Mexicano Arched Square Top Prefinished Blonde Oak Door

£203.95 (inc VAT) £213.95

Oak Doors for the Widest 33 Inch Openings

At 838mm, or 33 inches, this is the widest of the standard internal door widths, a step up from the common 762mm (30 inch) leaf and the wider 813mm (32 inch) size. It suits larger rooms, main hallways and grander openings, where a standard door can look a little narrow and a broader leaf reads as generous and well proportioned. It sits at the top of our range of popular door sizes, and these doors come in the standard 1981mm (78 inch) height. Because it gives the most generous clear opening of the standard sizes, it is also the width most often chosen where easier access matters.

Larger Rooms and Easier Access

A broader leaf changes how a doorway feels and works. In a large room or a main through-route it keeps the proportions right, and because the clear opening you actually pass through is wider once the frame is allowed for, it makes moving furniture and everyday movement easier. That same generous opening is why the widest leaves suit step-free and wheelchair use, and you will find the guidance and the doors best suited to it in our wheelchair accessible doors collection. If your openings are narrower, the range steps down to the standard 30 inch (762mm) door and the wider-than-standard 32 inch (813mm) door, and for an opening wider than a standard leaf, or an odd size, a made-to-measure door can be built to fit. A few things worth checking before you order:

  • Measure the structural opening, not the old door, as a 33 inch leaf needs a wider frame and reveal than a standard door.
  • Confirm the height as well as the width: these doors come in the standard 1981mm (78 inch) height.
  • Decide on construction, solid oak throughout or an oak veneer over an engineered core.
  • Choose a finish, prefinished for hanging straight away or unfinished to oil once it is hung.

Styles and Construction to Choose From

Most of the main styles are made in this width, so choosing the widest size does not limit the design you can have. You will find panelled oak doors and traditional period designs, cottage and ledged styles, shaker looks, and glazed oak doors that borrow light between rooms, in both solid oak and oak veneer. Solid oak doors are oak throughout and can be trimmed and refinished over the years, while oak veneer doors face an engineered core that helps a broader leaf stay stable and flat. Where building regulations call for one, certified FD30 fire doors are made in this width too, always as an oak veneer over a fire-resisting core rather than solid oak, as the core is what carries the certification.

Finishing and Hardware

Unfinished oak doors are ready to seal once they are hung, and the finish you choose makes a real difference to how the oak wears. We recommend a hardwax oil such as Treatex, which protects the wood while keeping the grain visible and is easy to refresh in years to come, rather than a stain, varnish or lacquer. You will find oils and care products in our door treatments range, and matching handles, hinges and latches to finish the job in door hardware.

Yes. 838mm is the metric equivalent of a 33 inch door, so the two describe the same leaf width. You will see both used across the range.

838mm (33 inches) is the widest of the standard internal widths, so it is chosen for larger rooms, main hallways and grander openings where a standard door would look a little narrow, and for the most generous, easy-access clear opening. If you need something narrower, the range steps down through the standard 30 inch and other sizes.

They are among the best choices. Because the clear opening you pass through is narrower than the leaf, the widest leaves give the most generous clear opening, so a 33 inch door suits step-free and wheelchair access. See our wheelchair accessible doors collection for the guidance.

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