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Walnut Internal Doors

If you are looking for rich, warm walnut finishes with premium quality and bespoke and fire-rated choices, here at Door Warehouse, we have a stunning range of walnut interior doors that truly enhance your home. Pop into our showroom and see the difference in person.

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Walnut internal door with a frosted glass panel installed in a modern home, featuring sleek hardware and warm wood grain finish
Home / Internal Doors / Walnut Internal Doors

Why Choose a Walnut Door?

With their bold, warm tones, Walnut finish internal doors bring timeless elegance and character to any space. These doors work beautifully whether your décor is minimalist, modern or traditional. Our walnut interior doors stand out for:

  • The natural beauty of walnut finish, a signature style for refined interiors
  • Pre-finished walnut options, ready to install, saving time and effort
  • Versatility: perfect for both standard-sized doors and custom-made sizes
  • Premium materials and assured quality for long-lasting performance
  • Optional fire-rated specifications
  • Door Finish of your choice – Door Finishing

Choosing a walnut internal door means choosing a refined interior door that improves the feel of your space.

Our Walnut Internal Door Range & Options

We offer an extensive walnut door selection tailored to your requirements:

  • Size Options: Standard-sized walnut doors, extra-wide, tall/full-height or fully custom-sized walnut doors built to measure.
  • Finishes & Materials: Pre-finished walnut veneer or stained walnut, sumptuous natural walnut look, or unfinished versions ready for your paint/stain.
  • Styles: Flush slab walnut doors, panelled walnut doors, glazed walnut doors (for light-sharing spaces) and internal fire-rated walnut doors.
  • Performance Upgrades: Internal fire door in walnut finish, acoustic upgrades and bespoke sizing where required.
  • Customisation: We’ll work from your measurements (or CAD drawings if needed) to ensure your walnut door fits exactly and looks bespoke.

Every walnut internal door we supply is built to high standards of craftsmanship and fit, whether you select a standard-sized door or a fully made-to-measure walnut solution.

Visit the Showroom

We’d love to welcome you to our showroom, where you can explore our walnut range in person, compare finishes and experience the quality of our doors up close. We’re open Monday to Friday from 9:30 am to 3:00 pm, and on Saturdays from 10:00 am to 2:00 pm. Our friendly team will guide you through every option, from standard and pre-finished walnut doors to custom sizing and fire-rated walnut styles, helping you choose the perfect fit for your home. Bring along your measurements, photos or even a CAD drawing, and we’ll show you exactly how a walnut door can transform your interior, with a quote provided either in-store or by email.

Technical & Specification Overview

Feature Details
Sizes We supply standard-sized walnut doors as well as fully custom sizes to suit your exact opening.
Thickness Typically 35–44 mm, depending on style and fire-rated requirements.
Material & Finish Walnut veneer or stained walnut, available pre-finished or unfinished to suit your preference.
Fire Rated Selected walnut doors can be supplied as internal fire doors (FD30/FD60 options available depending on design).
Style & Configuration Options include single doors, pair doors, glazed walnut internal doors, and sliding/pocket walnut doors.
Lead Time Custom sizes or premium specifications may require longer lead times; this will be confirmed during your showroom visit.
Quality Control Each door undergoes strict inspection before delivery to ensure the finish, fit, and performance meet our standards.

How our service works

Ordering internal doors with us is a straightforward process designed to be quick, simple and stress-free.

Step 1

Send a photo of your existing interior doors/openings via our contact form, and we’ll reply with a PDF brochure. Prefer in-person? Pop into our Deeside showroom.

Step 2

Already know what you like? We’ll mock up your chosen specification (style, glazing, colour) and send a clear quote for your new internal doors.

Step 3

Once you’re happy, one of our friendly installers completes a site survey to measure up. Approve the final mock-ups and we’ll start production.

Step 4

When your doors arrive, we quality-check them, book your fitting, professionally install them, and remove your old doors and any waste.

Get in touch

From supply to installation, we handle it all.

Talk to our specialists today and bring your new doors to life

Why Homeowners Trust Door Warehouse

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Outstanding customer service

We’re proud of our reputation for friendly, professional service, with many customers praising our team from first consultation to final installation.

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10 year guarantee

Every door and window is backed by our trusted 10 year guarantee, giving customers lasting confidence in quality and durability.

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Expert installation

Our installers work with care and precision, leaving every home completely spotless and every project finished to the highest standard.

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Extensive product range

We offer a wide choice of doors, windows and stair parts, selected for quality and durability. With over 30 years’ experience, we help you find the perfect fit for your home.

What Our Customers Are Saying

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Let us help you find the right solution

Fill out the form below, and one of our friendly team members will contact you to discuss your needs.

    Specialists at Door Warehouse

    Or call one of our experts

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    Frequently Asked Questions

    What is the difference between standard and made-to-measure walnut doors?

    How do I measure for a walnut internal door?

    Are walnut internal doors available as fire doors?

    What lead time should I expect for a custom walnut door?

    Why should I visit the showroom rather than ordering online?