Rectangular Weather Louvre - Custom Size Alpha Air

Rectangular Weather Louvre – Custom Size

External weather louvre for ventilation openings. Rectangular Weather Louvre allows airflow while protecting against rain and debris ingress. Durable construction for long-term outdoor exposure. Ideal for plant rooms and facade ventilation.

Made to order. Please allow 5-7 working days for delivery.

Order before 3pm today for delivery by Tuesday 22nd September

Enter Your Required Size

Enter your exact dimensions below. Your item will be made to this size.

Width (mm)

Height (mm)

Powder Coating Colour (Optional)

Enter your preferred RAL colour code for powder coating. Leave blank for natural/unpainted finish.
Note: £60 per unique colour across your order.

Powder coating adds 1–2 working days to the lead time. It also makes this product made-to-order and non-returnable per our Returns Policy. This does not affect your rights if an item is faulty or not as described.

RAL Code

Description

Expertly designed for optimal performance, our Rectangular Weather Louvre features a durable and lightweight aluminium construction. This classic design seamlessly balances weather protection and ventilation, making it the ideal choice for the external outlet to your ductwork system.

Also available are our Circular Weather Louvres

Please note that the size selected will be the NECK size of the louvre. The overall face size will be 50mm larger on both axes.

We can make any size to order! Please contact us for a quote.

Frequently Asked Questions

How do I calculate the free area of this louvre?

Multiply the louvre width by height to get the total face area, then multiply by the free area ratio (typically 50% for standard weather louvres).

Can I get this louvre in a custom colour?

Yes. We offer powder coating in any RAL Classic colour. Select your RAL colour when adding to basket. Standard lead time is 1-2 additional working days for powder coating. RAL 9010 (Pure White) is our most popular colour.

What fixings do I need to install this louvre?

Weather louvres are typically fixed to the building facade using stainless steel screws through pre-drilled holes in the frame. A bead of silicone sealant around the perimeter prevents water ingress between the louvre frame and the wall.

Delivery Information

Made to Order

This item is made to order. Please allow 5-7 working days for delivery.

Delivery Options

Service	Estimated Delivery	Cost
Standard Delivery (UK mainland)	Next working day from dispatch	£15.95 +VAT (£7.95 for small items)
Free Delivery	Next working day from dispatch	Free on orders over £400 ex VAT
Click & Collect	Collect from our Leicester branch	Free
Scottish Highlands & Islands	2-3 working days from dispatch	£36.95 +VAT

Delivery Area

We deliver to all UK mainland addresses. Scottish Highlands and Islands deliveries may take a little longer. We are not currently delivering to Northern Ireland — Click & Collect remains available.

Questions about delivery? Call us on 0116 246 0031 or email sales@alphaair.co.uk

Returns Policy

Made to Order

This item is made to order and therefore not eligible for a return under our returns policy, unless faulty (see below).

Faulty Items

If you receive a faulty or damaged item, please let us know as soon as possible — ideally within 48 hours of delivery, so we can claim against the courier on your behalf. We will arrange a free collection and send a replacement or issue a full refund. This does not affect your statutory rights.

Questions? Contact us at sales@alphaair.co.uk