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eFans Direct
Plastic Back Box (Plenum Boxes) Top Entry - 450mm sq with 200mm dia spigot
- Price £33.89 at 1 shop
Variant: 450mm 200mm
£33.89
eFans Direct see shop
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£33.89Go to shop: eFans Direct
Prices include VAT, last checked 9 October at 13:06. Prices may have changed since. Advertising: some shops pay Pricuro a commission when you buy through a link. Offers are ordered by total price only; used and refurbished offers come last.
Price history
- Now
- £33.89
- Lowest
- £33.89
- Average
- £33.89
- Highest
- £33.89
Product details
| Brand | eFans Direct |
|---|---|
| Category | Tools |
| Manufacturer part number | GBER454520 |
| Shops compared | 1 |
| On Pricuro since | 3 October 2026 |
Description from the shop
The Plastic Back Box, also known as a plenum box, is a top-entry box that connects a circular duct to a square grille or louvre. Its durable plastic construction fits standard duct sizes and makes installation straightforward. Connects a circular duct to a square grille or louvre Top-entry spigot for the round duct Durable plastic construction, easy to install Smooths airflow behind the grille 15 combinations of square face (150 to 550mm) and spigot (100 to 315mm) Suitable for Joining round ductwork to square grilles and louvres Homes and commercial buildings, behind ceiling or wall…
Read more
The Plastic Back Box, also known as a plenum box, is a top-entry box that connects a circular duct to a square grille or louvre. Its durable plastic construction fits standard duct sizes and makes installation straightforward. Connects a circular duct to a square grille or louvre Top-entry spigot for the round duct Durable plastic construction, easy to install Smooths airflow behind the grille 15 combinations of square face (150 to 550mm) and spigot (100 to 315mm) Suitable for Joining round ductwork to square grilles and louvres Homes and commercial buildings, behind ceiling or wall terminals InstallationFits behind the grille or louvre, with the circular duct connecting to the spigot on the top of the box. Match the square face to the grille size and the spigot to the duct diameter. Specifications Type Plenum box (plastic back box) Entry Top entry (spigot on top) Square face sizes 150 to 550mm Spigot sizes 100 to 315mm diameter Function Connects circular duct to square grille or louvre Material Plastic Warranty 1 Year Manufacturer
Frequently asked questions
Where is Plastic Back Box (Plenum Boxes) Top Entry - 450mm sq with 200mm dia spigot cheapest?
Right now at eFans Direct for £33.89. We compare one offer.
How much does Plastic Back Box (Plenum Boxes) Top Entry - 450mm sq with 200mm dia spigot cost?
Currently £33.89.
Is now a good time to buy Plastic Back Box (Plenum Boxes) Top Entry - 450mm sq with 200mm dia spigot?
Building the price history. We have only just started recording this price. After two weeks we will show here whether the current price is a good one.
Is Plastic Back Box (Plenum Boxes) Top Entry - 450mm sq with 200mm dia spigot in stock?
No shop currently lists it as in stock.
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