option

A quick learner from williamstown, NJ 08094 says:
S380 28" The window sash weighs 20 lbs. what option do I need?
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Mike from SWISCO responded:
Option 2440 will carry a window sash weight of 19 through 24 pounds.

This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.

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