Aqua Power Limescale Magnet, Size: S
for 1/2” pipes 
H: 70mm - B: 145mm - T: 80mm
Can be installed directly onto the mains in your house or apartment  up to 27mm pipe diameter

Aqua Power Limescale Magnet, Size: M
for 3/4 - 5/4” pipes 
H: 110mm - B: 204mm - T: 113mm
For use on water mains with a pipe diameter of up to 46mm

Aqua Power Limescale Magnet, Size: L
for 1 1/2” pipes
H: 143mm - B: 255mm - T: 145mm
For larger buildings such as apartment blocks, commercial or agricultural premises with pipe diameters of up to 62mm

Aqua Power Limescale Magnet, Size: XL
for 3 - 4” pipes 
H: 185mm - B: 500mm - T: 235mm
For large buildings, such as industrial or commercial premises, hospitals, etc. with pipe diameters of up to 115mm