For insulation for 54mm pipes take a look at the Armaflex, Rock-Lap and Glasswool options below and find a quality solution.
Price range: £6.38 through £79.22
Price range: £3.23 through £65.67
Price range: £3.44 through £37.04
Price range: £6.85 through £108.88
Price range: £7.26 through £134.23