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.

Lifestyle Belize unfinished oak 4 light glazed internal door installed in a room setting
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Belize Unfinished Oak 4 Light Glazed Internal Door

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£199.95 (inc VAT) £209.95

Lifestyle Bury Victorian four panel oak fire door in room
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Bury 4 Panel Pre-Finished Oak Fire Door

£254.95 (inc VAT) £264.95

Lifestyle solid oak ledge and braced rustic bead and butt door installed in a home
Product solid oak ledge and braced rustic bead and butt door

Solid Oak Ledge and Braced Rustic Bead and Butt Door

£341.95 (inc VAT) £361.95

Belize Prefinished Oak Internal Door Lifestyle Image
Product Belize prefinished oak internal door

Belize Prefinished Oak Internal Door

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£140.95 (inc VAT) £145.95

Lifestyle Kingston oak fire door in room
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Kingston Oak Fire Door

£272.95 (inc VAT) £282.95

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Cambridge 1930's Internal Oak Veneer Door

£146.95 (inc VAT) £156.95

Product 1930s style panelled oak veneer door
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1930's Style Panelled Oak Veneer Doors

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£124.95 (inc VAT) £129.95

Lifestyle Norwich modern glazed oak door installed
Product Norwich modern glazed oak door

Norwich Modern Glazed Oak Door

£219.95 (inc VAT) £229.95

Lifestyle Galway vertical panel oak door installed
Product Galway vertical panel oak fire door

Galway Vertical Panel Oak Fire Door

£232.95 (inc VAT) £242.95

Lifestyle solid oak rustic butt and bead profile stable door installed in a home
Product solid oak rustic butt and bead profile stable door

Solid Oak Rustic Butt and Bead Profile Stable Door

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£369.95 (inc VAT) £389.95

Product five panel shaker style solid oak door
Product five panel shaker style solid oak door

Five Panel Shaker Style Solid Oak Door

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£299.95 (inc VAT) £314.95

Lifestyle Mexicana Ely prefinished internal oak five lite glazed door installed
Product Mexicana Ely prefinished internal oak five lite glazed door

Mexicana Ely Prefinished Internal Oak 5L Glazed Door

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£269.95 (inc VAT) £284.95

Lifestyle Eton unfinished glazed oak door installed in pantry room
Product Eton unfinished four flat panel glazed oak door

Eton Internal Unfinished 4 Flat Panel Glazed Oak Door

£190.95 (inc VAT) £200.95

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Product Eton four flat panel oak fire door

Eton 4 Flat Panel Fire Door

£250.95 (inc VAT) £260.95

Lifestyle solid oak ledge and braced rustic V-groove door installed in a home
Product solid oak ledge and braced rustic V-groove door

Solid Oak Ledge and Braced Rustic V-Groove Door

£341.95 (inc VAT) £361.95

Product Mexicano offset clear glazed prefinished oak door
Product Mexicano offset clear glazed prefinished oak door

Mexicano Offset Clear Glazed Prefinished Oak Door

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£207.95 (inc VAT) £217.95

Lifestyle Wexford internal oak door installed in a home interior
Product Wexford internal oak door

Wexford Internal Oak Door

£150.95 (inc VAT) £160.95

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Oak Veneer 1 Light Glazed Internal French Door

£169.95 (inc VAT) £179.95

Product London flat four panel unfinished oak FD30 fire door
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London Flat 4P Unfinished Oak FD30 Internal Fire Door

£242.95 (inc VAT) £252.95

Product Norwich modern oak door
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Norwich Modern Oak Door

£157.95 (inc VAT) £167.95

Lifestyle Mexicana Ely prefinished internal oak one lite glazed door installed
Product Mexicana Ely prefinished internal oak one lite glazed door

Mexicana Ely Prefinished Internal Oak 1L Glazed Door

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£224.95 (inc VAT) £234.95

Product Mexicana Ely internal oak one lite glazed door
Product Mexicana Ely internal oak one lite glazed door

Mexicana Ely Internal Oak 1L Glazed Door

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£181.95 (inc VAT) £191.95

Lifestyle Coventry four panel obscured glazed shaker door in room
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Coventry Four Panel Glazed Shaker Prefinished Obscured Glass

£269.95 (inc VAT) £284.95

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Lifestyle solid oak interior French door kit installed in a home

Solid Oak Interior French Door Kit

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£189.96 (inc VAT) £199.96

Lifestyle solid oak three-ledge unglazed rustic V-groove cottage door installed in a room setting
Product solid oak three-ledge unglazed rustic V-groove cottage door

Solid Oak 3 Ledge Un-Glazed Rustic V-Groove Cottage Door

£327.95 (inc VAT) £342.95

Lifestyle DX30 1930s style unglazed oak veneer door installed in a room setting
Product DX30 1930s style unglazed oak veneer door

DX30 1930's Style Un-Glazed Oak Veneer Door

£151.95 (inc VAT) £161.95

Lifestyle Sydney prefinished oak door installed in bedroom
Lifestyle Sydney prefinished oak door installed in bedroom

Oak Sydney Prefinished Internal Door

£303.95 (inc VAT) £318.95

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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