I have windows in. 1970 duplex they are aluminum and need these replaced. The silver tube is 20" and from white tip to end of metal thing is 1.75" the silver tube is 9/16" round. I don't know what the white piece looks like but will need something to attach to the window itself. The plastic is all broken and missing. Prolly need 24 - 30 of the silver tubes. Thank you
David