need replacement channel balance 29 6 LW CMC 11

A handy person from benicia, ca says:
The window is a Philips 800 series vinyl window. It has the following printed on it 29 6 LW CMC 11. It measures 1/2" x 30". Which channel balance do I need? Pictures attached.

Thanks...Craig
User submitted photo of their Philips 800 series window channel balance.
Profile picture of Donna
Donna from SWISCO responded:
Hi Craig,
This is SWISCO Series 390. I believe the 29 6 translates to our 2960 stamp option. To check, please remove the window sash and place it on a scale.

A 30" Series 390 balance with stamp option 2960 will carry a window sash weight range of 32 through and including 35 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.

If your sash does fall into that weight range you can choose stamp option 2960; we just added this option online for you so please allow 2 to 3 weeks for production.
A handy person from Benicia says:
Hi Donna,

The window weighs about 30 lbs. weighed on a bathroom scale. so would the 2960 still be the right choice?

Thanks...Craig
Profile picture of Donna
Donna from SWISCO responded:
Hey Craig,
Unless you think your scale is not correct, go with the 2950 stamp option. The 30" Series 390 with stamp option 2950 will carry a window sash weight range of 28 through and including 32 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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