certainteed double hung window coil
A handy person from Arlington, Massachusetts says:
August 21, 2010
Window type: Probably DEVON. Sash: Width=24"; Height= 18"; Wt. is about 10 pounds. I need SWISCO part numbers for: Coiled Balance Spring, Spring cover, Balance drum,Pivot Shoe, and any thing else you suggest. Note: Broken spring does not have a stamp imprint and parts and shipping cost.
Dave from SWISCO responded:
August 24, 2010
Look at our Certainteed Part Series 170, 334 coil balance.