Aluminium Box Gutter – 90° External Corner

The aluminium box gutter 90° external corner provides a precise, watertight connection where two box gutter sections meet at an outer angle. 

Designed for a clean architectural look, it enhances both performance and appearance along any roofline.

Manufactured in the UK from high-grade architectural aluminium, this corner unit is part of the OMS aluminium guttering system, offering long-term durability, corrosion resistance, and a professional finish for modern buildings.

Perfect for domestic and commercial rain gutters, it ensures seamless alignment and dependable flow across external roof edges.

Key Features

• 2 mm architectural-grade aluminium – lightweight, strong, and corrosion-resistant
• 90° external corner – connects gutter runs cleanly around outer roof angles
• Box gutter profile – maintains consistent water flow and capacity
• Powder-coated finish – available in any RAL colour for a seamless match
• Compatible with OMS aluminium gutters and downpipes
• Low-maintenance – resists peeling, discolouration, and surface wear
• Manufactured in the UK – precision-engineered with reliable quality and fast turnaround

Why You’ll Love It

This 90° aluminium box gutter corner combines strength and precision to create a leak-free connection that stands up to British weather.

Its powder-coated finish offers a sleek, modern look while blending perfectly with matching aluminium gutters and downpipes.

Ideal for both homeowners and contractors, it delivers the performance expected from a commercial-grade aluminium guttering system which reliable, low-maintenance, and built to last.

Whether installed on homes, offices, or industrial buildings, it ensures smooth water flow and a clean visual line around external corners.

What does a 90° external corner do?
It joins two box gutter sections at an outer angle, ensuring continuous, watertight drainage around roof edges.

Can it match my gutter colour?
Yes, it’s powder-coated in any RAL colour to match your aluminium guttering system perfectly.

Is aluminium better than plastic?
Definitely. Aluminium is stronger, lasts longer, and provides a premium finish compared to uPVC gutters.

Is it suitable for commercial buildings?
Yes, this commercial aluminium gutter component is used widely across both residential and industrial projects.

Do you offer other matching fittings?
Yes, OMS supplies 135° corners, stopends, and outlets for a complete box guttering system.

UK-made aluminium box gutter 90° external corner. Powder coated in any RAL colour for a durable, watertight, and professional roof drainage system.