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2040 x 826 x 40mm
Windsor Black Glazed - Prefinished Internal Doors

By Deanta Doors

: £0.00

  • 10 Year Guarantee against Manufacturing Defects
  • Price Match Promise

Want a Complete Package?
Choose a Pre-hung Door Set

Make installation quicker, cleaner, and more convenient with a complete doorset — the ideal solution if you're starting from scratch or renovating.

Why choose a door set?

  • Everything in one – Includes the door, pre-hung in its frame on three hinges with a latch or bathroom lock pre-fitted.
  • Time-saving install – Pre-assembled components reduce fitting time
  • Perfectly matched parts – No guesswork on what hardware fits
  • Clean, consistent finish – Factory-prepped for a more professional result
Fully Finished

Fully Finished

High grade materials

High Grade Materials

10 Year Guarantee

10 Year Guarantee

Product Information

The 826mm Windsor Black Glazed - Prefinished Door is a fantastic choice for anyone looking to give their home a make over. Measuring 2040 x 826 x 40mm, this internal door is a popular choice, being a staple in the Deanta Doors range.

Supplied fully finished with clear bevelled glass, you do not need to worry about any painting or staining - you can simple hang the door when it arrives.

The Windsor Black Glazed Internal Door by Deanta combines timeless elegance with modern functionality.

 The Windsor Black Glazed Internal Door by Deanta combines timeless elegance with modern functionality. Featuring three bevelled-edged panels, this glazed version replaces the top panel with a clear single-sided bevelled glass insert, allowing natural light to flow while maintaining the door’s sophisticated character. The intricate mouldings and prefinished black surface add a flawless, ready-to-hang finish.

Crafted with a solid core, this door ensures strength and durability. It can be trimmed by up to 32mm from the width and height (16mm from any edge), ensuring a tailored fit for your space.

Backed by a 10-year manufacturer’s guarantee, the Windsor Black Glazed Internal Door is a perfect choice for adding light and style to your interiors.

PLEASE NOTE: 44mm FD30 fire doors supplied with fire rated clear flat glass (without bevel)

 

Technical Specification
Category
Brand
Glazing
Clear Bevelled Glass
Finish
These doors have been factory decorated and don’t need any further decoration.
Colour
Black
Construction
The construction of the door covers both the design and weight of the door.

Heavyweight (Solid Core) – The heaviest form of construction -  generally solid particle board with real timber lippings.
Engineered Solid Core (Heavyweight)
Width
826mm
Height
2040mm
Thickness
Non-fire rated internal doors are either supplied at 35mm thick (Imperial Doors, 1981mm (6’ 6”) or 2032mm (6’ 8”) tall) or 40mm thick (Metric Doors, 2040mm tall).

FD30 Fire doors are manufactured to a thickness of 44mm.

External doors are manufactured to a thickness of 44mm.
40mm
Lipping
The lipping is the timber material around all edges of the door from which your joiner can trim the door down in height and width, as well as fit hinges/ locks too.

Trim allowances vary by lipping size, door design and fire rating - please contact us for more information about your desired door’s trim allowance.
18mm
Raised Mouldings
Both Sides
Average Weight
30.0kg
Average Fire Door Weight
38.0kg
Lipping Short Edge
The lipping is the timber material around all edges of the door from which your joiner can trim the door down in height and width, as well as fit hinges/ locks too.

Trim allowances vary by lipping size, door design and fire rating - please contact us for more information about your desired door’s trim allowance.
18mm
Lipping Long Edge
The lipping is the timber material around all edges of the door from which your joiner can trim the door down in height and width, as well as fit hinges/ locks too.

Trim allowances vary by lipping size, door design and fire rating - please contact us for more information about your desired door’s trim allowance.
18mm
Max Trim Short Edge
16mm
Max Trim Long Edge
16mm
Suitable To Use As Pairs
Yes
Suitable For Use As Paired Fire Doors
Always install fire doors in-line with their associated certification document. Failure to do-so may invalidate certification.
Yes
Code
40WINGXBL826
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Standard UK Door Sizes:

  • 1981 x 381/419 x 35mm (sidelights/side panels)
  • 1981 x 457/533 x 35mm (cupboard/wardrobe)
  • 1981 x 610/686/711 x 35mm (restricted spaces)
  • 1981 x 762 x 35mm (most common internal door size)
  • 2032 x 813 x 35mm (usually former external door size)
  • 1981 x 838 x 35mm (mobility/wheelchair access)

Metric Door Sizes (Popular in Europe/Scotland):

  • Height: 2040mm
  • Width: 426/526/626/726/826/926mm
  • Thickness: 40mm

Measurement Tips:

  • Measure door opening for height, width & thickness.
  • Allow 2-3mm gap around the door for proper operation.
  • Contact us for bespoke sizes.

Trimming Guidelines:

  • Engineered timber doors can be trimmed to fit; consult our guidelines or contact us for advice.

View Our Full Size Guide

If you are unsure about your sizing, please contact us for assistance. We also offer bespoke / made to measure doors.

Get in touch if you need help with anything or if you have any questions about our products.

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