22mm compression fit: Two 22mm compression elbow isolating ball valves fit standard 22mm copper central heating pipework, best fitted on the boiler return Two-stage cleaning: A 12000 Gauss magnet core holds black magnetite sludge while the stainless steel mesh strainer traps non-magnetic debris such as scale, sand and swarf Complete fitting kit: Filter body, two 22mm isolating ball valves, a drain valve with tethered cap, a bleed vent and a lid removal tool all come in the box Fits any orientation: Install on vertical or horizontal pipe runs in four positions to suit the space near the boiler, leaving clearance above the lid for servicing Easy to service: Close both valves, undo the lid with the supplied tool and wipe the magnet and mesh clean, while the drain valve and bleed vent help minimise mess Specification: Black nylon body rated 0 to 120°C, measures 26 x 18 x 10 cm and weighs 1.5 kg, designed for domestic central heating and boiler protection