Viking Balances - 29" 2830 and 2840

A home owner from N. California says:
May 28, 2015
I have two windows with 29" long 2840 balance pairs broken and one with 29" long 2830 balance pairs broken. Please tell me what replacement complete balances to order.

Two images attached for ID purposes.

Thanks in advance.
User submitted photos of window balances.
Profile picture of Paul
Paul from SWISCO responded:
May 29, 2015
Based on these pictures, I would recommend our S395-29 with a 2840 stamp option for the first window and an S395-29 with a 2830 stamp option for the second. Let me know if you agree with my suggestions.
A home owner from N. California says:
May 29, 2015
Since I am pretty ignorant, I will defer to your judgement and order two pairs (sets) of the 2840 stamped and one pair (set) of the 2830 stamped.

HOWEVER, are these sold in pairs or individually?

Also, what recommendations do you have to clean and lubricate the channels for smooth and easy operation?

THANKS!

Martin
Profile picture of Tom
Tom from SWISCO responded:
May 29, 2015
Our balances are all sold individually, not in pairs. To lubricate the track, you can try a silicone spray. This is better than oil since it does not attract debris.
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