1-2 of about 2 matches for site:www.pullmanmfg.com heavier weights
https://www.pullmanmfg.com/window-balances-replacement-balances/
Window Balancer to Replace Sash Weights, Pulleys, & Spring Reels Window Balances Standard Replacement Balances Standard Balances Installation EZ
https://www.pullmanmfg.com/industrial-counterbalances/
test and are based on one balance. Multiple balances can be used for heavier weights. Cable Length and