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 Eindhoven 1 panel prefinished oak internal fire door in room
Product Eindhoven 1 panel prefinished oak internal door

Eindhoven 1 Panel Prefinished Oak Internal Fire Door

£469.95 (inc VAT) £489.95

Lifestyle Pattern 10 one panel glazed oak door installed in room
Product Pattern 10 one panel glazed oak door

Pattern 10 One Panel Glazed Oak Fire Door

£848.95 (inc VAT) £888.95

Product Pattern 10 one panel oak internal door
Product Pattern 10 one panel oak internal door

Pattern 10 One Panel Oak Fire Door

£225.95 (inc VAT) £235.95

Product Inlay one panel oak veneer FD30 internal fire door
Product Inlay one panel oak veneer FD30 internal fire door

Inlay 1P Oak Veneer FD30 Internal Fire Door

£286.95 (inc VAT) £301.95

Lifestyle Utah three panel frosted glazed prefinished oak door installed in a room
Product Utah three panel frosted glazed prefinished oak door

Utah 3 Panel Frosted Glazed Prefinished Oak Door

£327.95 (inc VAT) £342.95

Lifestyle Utah three panel clear glazed prefinished oak door installed in a room
Product Utah three panel clear glazed prefinished oak door

Utah 3 Panel Clear Glazed Prefinished Oak Door

£317.95 (inc VAT) £332.95

Product Idaho prefinished oak internal door
Product Idaho prefinished oak internal door

Idaho Prefinished Oak FD30 Internal Fire Door

£343.95 (inc VAT) £358.95

Product contemporary 4 panel shaker prefinished oak fire door
Product contemporary 4 panel shaker prefinished oak fire door

Contemporary 4 Panel Shaker Prefinished Oak Fire Door

£252.95 (inc VAT) £262.95

Product Mexicano pattern 10 light clear glazed prefinished internal fire door

Mexicano Prefinished Oak FD30 Pattern 10 Glazed Frosted Lined Fire Door

£949.95 (inc VAT) £994.95

Lifestyle Melbourne prefinished oak fire door installed
Lifestyle Melbourne prefinished oak fire door installed

Melbourne Pre-finished Oak Fire Door

£386.95 (inc VAT) £406.95

Lifestyle Deanta oak prefinished internal flush FD60 fire door installed
Product Deanta oak prefinished internal flush FD60 fire door

Oak Prefinished Internal Flush FD60 Fire Door

£358.95 (inc VAT) £373.95

Lifestyle flush prefinished oak glazed FD30 fire door installed
Product flush prefinished oak glazed FD30 fire door

Flush Prefinished Oak Glazed FD30 Fire Door

£340.95 (inc VAT) £355.95

Product Mexicano modern veneer oak door
Product oak Mexicano internal door with vertical planks

Mexicano Modern Veneer Oak Door

£141.95 (inc VAT) £146.95

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

Solid Oak Abbey 3 Ledge Rustic V-Groove Cottage Door

£385.95 (inc VAT) £405.95

Lifestyle solid oak Abbey three-ledge rustic bead and butt cottage door installed in a room setting
Product solid oak Abbey three-ledge rustic bead and butt cottage door

Abbey 3 Ledge Rustic Bead and Butt Internal Cottage Doors

£385.95 (inc VAT) £405.95

Lifestyle Thames oak door installed in a room
Product oak Thames internal door with vertical boarded panel

Thames Prefinished Oak Internal Door

£209.95 (inc VAT) £219.95

Lifestyle Thames prefinished oak half light glazed internal door installed in a room setting
Product Thames prefinished oak half light glazed internal door front view

Thames Prefinished Oak Half Light Glazed Internal Door

£288.95 (inc VAT) £303.95

Lifestyle rustic oak four panel prefinished internal door installed in a room setting
Product rustic oak four panel prefinished internal door

Rustic Oak 4 Panel Prefinished Internal Door

£243.95 (inc VAT) £258.95

Lifestyle Rushmore unfinished oak internal door installed in a room setting
Product Rushmore unfinished oak internal door

Rushmore Unfinished Oak Internal Door

£198.95 (inc VAT) £208.95

Lifestyle Emral prefinished oak clear glazed fire door installed in a room setting
Product Emral prefinished oak clear glazed fire door

Emral Prefinished Oak Clear Glazed Fire Door

£814.95 (inc VAT) £854.95

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

Aria Oak Laminated Internal Fire Door

£326.95 (inc VAT) £341.95

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

Aria Oak Clear Glazed Laminated Internal Door

£318.95 (inc VAT) £333.95

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

Toledo 3 Panel Prefinished Oak Fire Door

£340.95 (inc VAT) £355.95

Lifestyle Sydney prefinished glazed oak door in living room
Product Sydney prefinished glazed oak door with vertical grooves

Oak Sydney Prefinished Glazed Internal Door

£343.95 (inc VAT) £363.95

Product Reims five panel diamond prefinished oak glazed internal door

Reims 5 Panel Diamond Prefinished Oak Internal Glazed Door

£459.95 (inc VAT) £484.95

Lifestyle Reims five panel diamond prefinished oak FD30 fire door installed
Product Reims five panel diamond prefinished oak FD30 fire door

Reims 5 Panel Diamond Prefinished Oak FD30 Fire Door

£508.95 (inc VAT) £533.95

Lifestyle oak Mexicano glazed door installed in neutral interior
Product oak Mexicano prefinished 6L glazed door

Engineered Oak Mexicano Unfinished 6L Glazed Door

£188.95 (inc VAT) £198.95

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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