The HyDrain 2nd Fix consists of a domed polypropylene grate with a robust glass-filled nylon waterproofing flange that is held together by 4 x bolts & nuts. The outlet is 110mm and connects to all 4 F-box 1st Fix options. 

Certified by Agrément SA – Certificate No: 2017/540.

A modern, high-performance alternative to traditional cast iron full-bores typically used on flat concrete roofs for rainwater drainage. 

High flow rate. 

The 2nd Fix is warranted for 10 years from date of purchase against manufacturer's defects.