Spillway Box 15000

A vital part of the premium Oase Waterscaping range, the Oase Spillway Box 15000 is the ultimate foundation for building breathtaking, natural-looking watercourses. Designed specifically for high-volume pumps, this heavy-duty waterfall box handles flow rates up to 15,600 litres per hour. As water enters the chamber, specialised internal baffles efficiently diffuse the pressure, transforming water into a smooth, even sheet that cascades perfectly across the spillway's full width.

Structural Strength & Easy Installation

• Heavy-Duty Construction: Built from a crush-proof single block with internal baffles stabilised by support cones, the box is structurally sound enough to support heavy landscaping rocks directly on top of it without warping or cracking.
• Seamless Camouflage: The reinforced front lip is specially designed to retain natural stones, gravel, soil, and marginal plants, allowing you to completely hide the plastic mechanics and create a 100% natural-looking spring.
• Secure Liner Attachment: Installation is incredibly straightforward. The clever rear liner attachment makes plumbing the top of your waterfall quick and secure, effectively eliminating the risk of water loss due to ground settling over time.

Can I cover this box with heavy rocks? 

Yes! The Oase Spillway Box 15000 features a highly robust, crush-proof design with integrated support cones. This design allows you to safely stack large stones and heavy landscaping rocks directly on top of the unit, completely disguising it within your rockery or waterfall build.