window pivots

A quick learner from lake city fl says:
I need 2 ,one for each side what looks to be 15-086 and 15-807 pivot shoe or maybe tandom coil housing the window (lower ) weigh 18 pounds, S180-8 for springs ? . Also need 2 16-024 mounting bracket and 2 of the top locks that measure 11/16 wide x 1 5/8 long. pat number on the window pivots are 5353548. one spring was marked 8 df
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Tom from SWISCO responded:

Hello! I agree with your list of parts. Our 15-087 shoe, 15-086 secondary housing, 16-024 bracket, and Series 180 coil spring should work well for your window. 

However, if your sash is only 18 pounds, then using four 8 pound springs would be too strong. Instead, I recommend using one 4 pound spring and one 5 pound spring on each side. That adds up to 9 pounds per side, which should be perfect for your sash weight of 18 pounds. That'd be our S180-4 and S180-5.

I'm not as certain about your tilt latch. Would you be able to remove one undamaged version from the window and show us a few photos of it by itself? I'd especially like to see it from the side and from underneath. Thank you!

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