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Trinity Black Prefinished Internal Door (201360)
21450
From £214.50 (inc VAT)
Unit price per
4.56 Average
Product Code
201360
21450
From £214.50 (inc VAT)
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To allow you to spend where it matters, the cheapest available delivery option will automatically be selected at the checkout stage. Don’t forget that orders over £750 will qualify for free shipping!
Standard Delivery Rates
Doors - £40.00* (this is per order, not per door)
Ironmongery and Oils - £15.00
Skirting, Architraves, Linings, Window boards and Furniture - £25.00
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21450
From £214.50 (inc VAT)
Unit price per
Overview:
Trinity Black Prefinished Internal Door
Choosing a black internal door often means deciding between bold contemporary styling and timeless panel detail. The Deanta Trinity Prefinished Black Internal Door is designed to offer both, combining classic structure with a confident modern finish.
The defining feature of the Trinity door is its distinctive triple square panel design, arranged vertically down the centre. This structured layout introduces balance and symmetry, creating depth without unnecessary ornamentation. The rich black prefinished surface enhances the crisp panel lines, delivering a strong architectural presence that works equally well in modern and transitional interiors.
The Trinity Black FD30 Fire Door is perfect for those looking for this style of door who need a fire-rated door, as it can withstand fires for a minimum of 30 minutes. If you are looking to have more light shining through your home, we have the Trinity Black Oak Glazed Door. If you want a brighter version of this style, we stock the Trinity White Primed Door.
Constructed with a solid engineered core, the Trinity provides strength, durability, and improved sound insulation compared to hollow alternatives. The reassuring weight and stability make it well-suited to living rooms, bedrooms, and hallways where both privacy and long-term performance matter.
Supplied prefinished in black, the door is ready to install, removing the need for additional finishing and ensuring a consistent, factory-applied result. With a generous trimming allowance, it also allows flexibility during fitting for a clean, precise installation.
As this door is prefinished, it is ready for installation, but will require refinishing in the areas you have cut or modified to fit furniture on your door. For what treatment to use on this internal door, we would recommend a triple coat of Treatex clear satin finish on those modified spots.
This door comes with a 10-year warranty and pairs up perfectly with our compatible hinges, latches, handles, and other accessories, which all in all help create that premium, final, and finished look. We strongly recommend considering them!
Key Product Information
TRIPLE PANEL DESIGN – Vertical square panel detailing adds symmetry and depth, blending traditional influence with modern simplicity.
RICH BLACK PREFINISHED SURFACE – Factory-finished for a smooth, consistent appearance that delivers instant visual impact.
SOLID ENGINEERED CORE – Provides strength, stability, and enhanced sound insulation for dependable everyday use.
PREFINISHED FOR CONVENIENCE – Supplied ready to hang, eliminating the need for additional painting or staining on site.
10-YEAR MANUFACTURER’S WARRANTY – Backed by long-term assurance reflecting build quality and reliability.
| Certification | FSC® Certified |
|---|---|
| Usage | Internal Use |
| Product Weight Range | 21kg-45kg |
| Trim Down By | 16mm each side, 16mm top, 16mm bottom |
| Width | 610mm or 24 Inch, 686mm or 27 Inch, 762mm or 30 Inch, 838mm or 33 Inch |
| Wood/Colour Type | Black |
| Thickness | 35mm |
| Height | 1981mm or 78 inch |
| Fire Rating | Not Rated |
| Finish | Prefinished |
| Construction | Engineered Solid Core |
| Brand | Deanta Doors |
| Product Code | 201360 |
No FAQs available for this product.
Because it’s important that our products get to you in perfect condition and on time, we only work with trusted, reliable delivery companies who have an excellent reputation. To allow you to spend where it matters, the cheapest available delivery option will automatically be selected at the checkout stage. Don’t forget that orders over £800 will qualify for free shipping!
Standard Delivery Rates
Doors - £40.00* (this is per order, not per door)
Ironmongery and Oils - £15.00
Skirting, Architraves, Linings, Window boards and Furniture - £25.00
*We apply a shipping surcharge of £35.00 to certain postcodes for door orders and £25 for timber only orders, which can also add an additional 5 working days to the delivery lead time, see our delivery page for more information.
For Standard deliveries, you will receive contact from the courier prior to delivery. For Express deliveries, you will not receive contact from the courier, with the aim to avoid delays in the Express delivery.
If you have chosen additional options for your items such as prefinishing, please allow up to an additional 10 working days for delivery. This will depend on the number of in-house oiling requests and the chosen finish which will affect the number of coats and required drying time.
Generally delivery is a weekday service. Couriers may however operate on weekends during busy periods. As such, we are unable to offer weekend deliveries, but this may be offered by the courier if they call to arrange your delivery date and time. Please note that your delivery will be made to the kerbside. As such, please ensure you can move your order to a secure location.
All delivery times given are based on orders being placed before 12-midday and the lead times are from once your order has been dispatched, not placed.
As unforeseen circumstances can, on the rare occasion, cause delivery issues, we do not recommend booking any tradesmen until your items have been delivered.
Flooring Delivery
Delivery is typically 7-10 days from order date. Your flooring will normally come on a pallet and be shipped using a kerbside delivery. We will call you before delivery to agree a date that suits as someone will need to be available to help offload. Please remember that our solid oak flooring is particularly thick and therefore very heavy. 65m2 will weigh approximately 1 tonne/1000kg.
Still Have Questions?
If you still have questions regarding the delivery of your order, please give our dedicated Customer Service Team a call and they will be happy to assist you further.
Please Note: We are obliged to apply a shipping surcharge to certain postcodes. Enter your postcode at the checkout to see if any surcharges apply. Surcharges are applied on top of the Free Delivery and also incur a longer lead time (5-10 days). If you have any questions regarding surcharges, please call us on 01455 566 566 to find out more.
For more detailed delivery information see our delivery page here
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Related Blog About Trinity Black Prefinished Internal Door
by Will Wheat on Nov 13 2025
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Glass internal doors are an increasingly popular choice for homeowners seeking to brighten spaces and create a sense of openness. Unlike solid doors, glass doors allow natural light to flow between rooms, making smaller areas feel larger and more connected.
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Which Styles of Glass Internal Doors Work Best?
Glass doors come in many styles to suit different interiors. Clear or frosted panels let light through while providing privacy, making them ideal for living rooms, kitchens or hallways.
Fully glazed doors create a modern, sleek aesthetic, while doors with smaller decorative glass panels add subtle elegance.
At Internal Doors we offer both single-panel and multi-panel designs, allowing homeowners to choose a style that complements their existing décor.
How Do You Match Glass Doors with Interior Design?
Glass doors pair well with a range of interiors. For contemporary homes, full glazed doors create a minimalist look.
Traditional interiors benefit from oak or white frames with decorative glass, adding warmth and character.
Selecting matching handles and hinges from Internal Doors ensures a cohesive finish while maintaining functionality.
Where Can Glass Internal Doors Be Installed?
Glass doors are versatile and can be used throughout the home. They work well in hallways, living areas and kitchens, enhancing light flow while maintaining separation between spaces.
In offices or studies, frosted glass doors provide privacy without sacrificing brightness.
We offer options that are suitable for both domestic and professional interiors, ensuring you find the right door for any setting.
How Should Glass Internal Doors Be Maintained?
Glass internal doors are surprisingly low-maintenance. Regular cleaning with a soft cloth and non-abrasive cleaner keeps the glass sparkling. Wooden or painted frames may need occasional dusting and care, especially in high-traffic areas.
With proper maintenance, glass doors retain both their visual appeal and functionality for many years.
Why Choose Glass Interior Doors from Internal Doors?
We stock an extensive range of glass internal doors designed to combine style with durability. With options from top brands, and prefinished and ready-to-install doors, we make updating your home simple.
Expert guidance and UK delivery make it easy to select doors that enhance both the look and function of your interior spaces.
by Will Wheat on Nov 10 2025
Why Does a Door’s Finish Matter in Interior Design?
A door’s finish can completely transform how a room feels. While most people focus on furniture or wall colour, the tone, texture and sheen of your internal doors play a huge part in defining your home’s atmosphere.
The right finish doesn’t just protect the door, it sets the mood. Glossy surfaces make rooms feel brighter and more open, while matte or timber textures add warmth and depth.
According to Houzz Research’s 2024 State of the Industry Report, nearly three-quarters of interior designers (73%) expect increased demand for their services, reflecting homeowners’ growing investment in design details such as materials and finishes that elevate interior spaces.
At Internal Doors, you’ll find finishes that complement every home style, from rich, natural oak to crisp white and fully painted designs.
How Can Different Door Finishes Change the Mood of a Room?
Your choice of finish affects everything from the sense of space to how colours interact with lighting.
Oak Internal Doors – Warm, natural and versatile. Oak brings a sense of craftsmanship and quality to any space. It’s especially popular in living areas and hallways, where it adds texture and visual warmth. Oak finishes also pair beautifully with neutral or earthy palettes.
White Internal Doors – Clean and contemporary, white doors create a bright and airy look. They help small spaces feel larger and are perfect for minimalist or Scandinavian-inspired interiors. White pre-finished doors are one of the UK’s most popular choices.
Painted Doors – The most flexible option for homeowners who love colour. Painted doors can add contrast to pale walls, match existing woodwork, or become a statement feature in their own right.
By selecting a finish that complements your décor, you create a cohesive flow throughout the home, one of the simplest yet most effective ways to make your space feel professionally designed.
Can Glossy or Matte Finishes Really Transform Smaller Spaces?
Absolutely. The sheen level of your door’s finish can subtly influence how large or light-filled a room feels.
Gloss or Satin Finishes: These reflect light, helping compact rooms appear brighter and more open. They work beautifully in hallways and bathrooms where natural light might be limited.
Matte Finishes: Offer a soft quality that suits larger or traditional homes. They absorb light slightly, adding richness and calmness to a room’s ambience.
How Should You Coordinate Door Finishes with Flooring and Skirting Boards?
Consistency is key when tying together your interior scheme. Door finishes work best when they complement your other architectural details.
Match Warm with Warm: Oak or woodgrain doors look best alongside similar-toned timber flooring or natural textures.
Contrast with Confidence: White doors paired with darker floors or coloured walls create elegant contrast that feels deliberate and modern.
Repeat Materials: If you have painted skirting and architraves, echo that finish on your doors for a smooth, cohesive look.
Interior designers often refer to this as “visual rhythm”. Repeating tones or textures throughout a space helps it feel unified rather than disconnected.
Are Certain Door Finishes More Durable Than Others?
Absolutely. The finish you choose plays a key role in both the appearance and lifespan of your internal doors.
Pre-finished doors are professionally sealed in factory-controlled conditions to maximise protection. They resist moisture, scuffs and everyday wear, making them ideal for busy family homes or rental properties where durability matters most.
Primed doors, on the other hand, arrive with a smooth undercoat ready for your chosen paint. They offer design flexibility but depend on the quality of paint and application for long-term performance.
How Do You Choose the Right Finish for Your Home?
When deciding on a finish, consider three essentials:
Lighting: Glossy or lighter finishes boost brightness; matte or darker tones create contrast and depth.
Style: Oak complements traditional interiors; white or painted finishes align with modern design schemes.
Maintenance: Pre-finished doors require minimal care; painted ones offer easy colour updates over time.
If you’re unsure, choose a finish that harmonises with your existing woodwork, flooring or furniture tones.
For inspiration and guidance, explore Internal Doors you can filter by finish, material and style to discover the perfect match for your home.
by Will Wheat on Nov 07 2025
Why Are White Internal Doors a Popular Choice?
White internal doors remain a favourite in UK homes because they bring a sense of brightness, openness and modernity.
Their clean lines and neutral tones make them versatile, easily fitting with any interior style.
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Which Styles of White Internal Doors Work Best in Different Rooms?
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How Do White Doors Affect Interior Design?
White doors act as a blank canvas, complementing walls, floors and furniture.
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Pairing with matching internal door handles and hinges from Internal Doors ensures a polished, coordinated look throughout your home.
Where Should White Internal Doors Be Installed?
White doors are highly versatile and can be used throughout the home. Bedrooms, living areas, kitchens, and hallways all benefit from their clean aesthetic.
For rooms with less natural light, white doors help reflect brightness, creating an airy feel. Glazed variants are ideal for connecting open-plan spaces while still providing separation when needed.
How Do You Maintain White Internal Doors?
Maintaining white doors is straightforward.
Regular dusting keeps them looking fresh, and gentle cleaning with a soft cloth removes fingerprints or marks. Prefinished doors from Internal Doors arrive ready to install, requiring minimal aftercare, while painted or primed doors can be touched up as needed to maintain a crisp appearance.
Why Buy White Interior Doors from Internal Doors?
Internal Doors provides a wide selection of white internal doors in various styles, sizes and finishes, sourced from top brands like LPD and Deanta.
Our doors combine quality and design, with UK delivery and expert advice to simplify your project. Whether you’re modernising your interiors or replacing worn doors, Internal Doors ensures your home achieves a fresh, stylish look.
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