MM
A heavier bar anode with 9" (225-235mm)
mounting centres. 3/4"bolt holes.
Similar to 120ZB or ZD72B (12Kg.)

Zinc
Size 457 x 102 x 64mm
Wt 12.5 Kg (12 Kg. net )
Order Code Z31 . . Price £98.16
( Can be poured to 14Kg 13.5 net . Z31H .Price £109.92)

Aluminium version
Wt 5.3Kg. (4.8Kg. net)
Order Code Z31A . . Price £58.08

Magnesium anode . . . . . more details
Same shape but with weld-on tabs
Can be bolted if the tabs are drilled (480 -540mm spacing)
Wt 4.7Kg. (3.9Kg. net)
Order Code Z39M . . Price £105.60