33″ Black Tip Alumatilt HD Spring Balances -Pair of (sbbt33)

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Description

 

Suitable to take a sash weight of between 14 and 18 kgs

Approx turns required

14kg – 8 & 1/2  turns

15kg – 9 & 1/2 turns

16kg -11 turns

17kg – 12 turns

18kg – 12 turns