Correct Balance Tension?
A home owner from Parker , CO says:
September 20, 2014
Tom from SWISCO responded:
September 22, 2014
A stamp of 26 4 usually corresponds to our 2640 option, but you should weigh your window sash just to be sure that's correct. The S385-27 page features a chart that lists each option available and how much weight each can support.