Harmer AV300T Aluminium Dome Grate Flat Roof Outlet with Vertical 3"BSPT Thread (Adapter required. See 3ADP) 75mm natural character—a look long associated

natural character—a look long associated with traditional Welsh slate roofs

5 Flushjoint Access Pipe

125mm RH Plain Primed Finish HR Square 90* Angle

Teranna composite fencing is eco‑friendly

Grey Composite Rail System 1

Harmer AV300T Aluminium Dome Grate Flat Roof Outlet with Vertical 3"BSPT Thread (Adapter required. See 3ADP) 75mm natural character—a look long associatedHarmer Roof AV Vertical Threaded Outlets feature a female socket with parallel threads to BS EN 10226 1, designed for secure connection to threaded tube. Ideal for installations within concrete slabs, they ensure a completely gastight seal. These outlets can be easily connected to cast iron, HDPE, and PVC pipework using the Harmer Roof Threaded Spigot Adaptor and A2 fire rated coupling.