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2800mm GRP Mark 1 Window Base Unit With Two Bracket Image
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2800mm GRP Mark 1 Window Base Unit With Two Bracket

SKU: BA28SW

  • Strong GRP Construction: Manufactured from rigid glass reinforced plastic for exceptional strength and durability.

  • Fast & Easy Installation: One-piece moulded base with attached bracket for simple fitting.

  • Integrated Window Board: Includes a 12mm mahogany plywood window board for a high-quality finish.

  • Optional PVC Skin: Top surface can be bonded with PVC skin to create a strong, long-lasting window board.

  • Low Maintenance & Guaranteed: Maintenance-free design with a 10-year extended guarantee, manufactured under ISO9001 standards.

Description

2800mm GRP Mark 1 Window Base Unit with 2x Fully Attached Bracket

Strong, Rigid, and Maintenance-Free Support for Bow Bay Canopies

The 2800mm GRP Mark 1 Window Base Unit is expertly engineered to provide a strong, durable, and maintenance-free foundation for bow bay window installations. Manufactured from rigid Glass Reinforced Plastic (GRP), this base unit is designed for fast and simple installation, saving both time and labour costs on-site.

Featuring a fully moulded bottom with an integrated bracket and a 12mm mahogany plywood window board, this unit offers both strength and stability. The top surface can be finished with a bonded PVC skin, creating a hardwearing, low-maintenance window board with a premium appearance.

Perfect for use alongside our GRP Bow Bay Canopies, this base unit ensures a seamless, professional finish that will last for years.


✅ Key Features & Benefits

  • Strong & Rigid GRP Construction – One-piece moulding with fully attached bracket for maximum stability.

  • Integrated 12mm Mahogany Plywood Window Board – Provides a solid internal finish with the option to bond a PVC skin for enhanced durability.

  • Fast & Easy Installation – Fully moulded design reduces fitting time and simplifies the installation process.

  • Maintenance-Free – GRP material requires no painting or treatment, just an occasional wipe down.

  • Extended Guarantee – Supplied with a 10-year extended guarantee for complete peace of mind.

  • Quality Assured – Manufactured under ISO9001 quality standards.

  • Perfect Match – Designed specifically for use with our Bow Bay Canopies.

📏 Specifications

  • Size: 2800mm

  • Material: Glass Reinforced Plastic (GRP)

  • Bracket: Fully attached in one-piece moulded construction

  • Window Board: 12mm mahogany plywood (top can be PVC bonded)

  • Guarantee: 10 years extended

  • Compliance: ISO9001 certified manufacturing

💡 Installer’s Note: Combine this Mark 1 Window Base Unit with our Bow Bay Canopies for a complete, professional bow window transformation with minimal labour and long-lasting durability.

Technical Information

  • Lead Time: Into Order 5-7 Days
  • Colour: 6 Colour
  • Material: GRP
  • Guarantee: 10 Years Guarantee
  • Weight: 2.30 Kg

Delivery & Returns

Delivery
The despatch timings we publish are estimates and due consideration needs to be made when making purchases with tight deadlines and as such we shall not be liable for any losses, costs, damages, charges, or expenses caused by any delay for delivery of the goods.
Returns Policy For Brissco Online
We appreciate that there may be occasions you may wish to return items. To help you with this process please see our returns policy below.
Returning an item – Damaged
In the event you receive damaged goods we will arrange a replacement item for you. However, it is your responsibility to notify us within 72 hours of receipt that an item has been received damaged (please see risk below).
Returning an item – Risk
On receipt of the delivery you, the customer, are responsible for those goods and any loss or damage to the goods shall be at your own risk.
Returning an item – Incorrect
If you receive incorrect goods it is your responsibility to notify us within 72 hours of receipt at which point we will make the necessary arrangements.
Delivery shortages
Firstly, our carrier delivers parcels/packages. Any shortages of them must be reported to the driver on receipt. Secondly, shortages of contents of the parcel(s)/package(s) against the enclosed Brissco advice note must be made within 72 hours.

PDFs

Spec Sheet

Fitting Instructions

FAQs

1. What is the GRP Mark 1 Window Base Unit?

It is a prefabricated base unit manufactured from strong, rigid GRP (Glass Reinforced Plastic) with a fully attached bracket and a 12mm mahogany plywood window board, designed for use with Bow Bay Canopies.

2. What makes this unit different from others?

The base unit is fully moulded in one piece with the bracket attached, ensuring strength, durability, and easy installation.

3. What materials are used in its construction?

It is made from rigid GRP with a 12mm mahogany plywood window board. The top surface can also be bonded with a PVC skin for extra durability.

4. What is the main purpose of this base unit?

It provides a strong and reliable base for Bow Bay Canopies, making installations faster, easier, and structurally sound.

5. How easy is it to install?

The design allows for quick installation as the bracket is fully attached in one piece, cutting down fitting time.

6. Is the product maintenance free?

Yes, it is virtually maintenance free and only requires occasional cleaning to stay in top condition.

7. What warranty is provided?

The unit comes with a 10-year extended guarantee for peace of mind.

8. Is the product manufactured to industry standards?

Yes, it is manufactured under ISO 9001 quality standards, ensuring consistency and reliability.

9. Can the window board be customised?

Yes, the top surface of the mahogany plywood board can be bonded with PVC skin to create a strong, maintenance-free finish.

10. Who would benefit from this product?

It is ideal for professional installers and homeowners looking for a durable, maintenance-free, and easy-to-install base unit to complement Bow Bay Canopies.

£ 353.24 EXC VAT

£ 423.89 INC VAT

in stock Lead Time: Into Order 5-7 Days

Select Option
  • 2800mm Mk1 Window Base Unit Standard White
  • 2800mm Mk1 Window Base Unit Ultra White
  • 2800mm Mk1 Window Base Unit Brown
  • 2800mm Mk1 Window Base Unit Light Oak
  • 2800mm Mk1 Window Base Unit Rosewood
  • 2800mm Mk1 Window Base Unit Anthracite Grey

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