Boler front and rear window gasket

[aznative]

I need to change out the old gaskets on my boler front and rear. I looked up scamp online store and they have window gasket sold my the foot. They also have beading and lock strip by the foot. So I am assuming I need both the gasket and beading/lockstrip?
Tapes & Trims

I am not near my boler but anyone have a clue how much I should buy to do both the back and front windows. Thanks so much for the help.

[Nelmes]

Scamp was good when I called and ordered from them, I would just get what they recommend.