41″ Black Tip Alumatilt HD Spring Balances -Pair of (sbbt41)

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Description

 

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

Approx turns required

14kg – 10 & 1/2  turns

15kg – 12 turns

16kg -13 turns

17kg – 14 turns

18kg – 15 turns