Yep!	Yep!	Nope!

Make sure that the top piece of EconoSpace in the frame goes all the way from edge to edge of the glass as shown at left.

This method will support the ends of the EconoSpace to help prevent the top piece from sagging when the adhesive finally succumbs to the ravages of gravity and time.

If you cut the EconoSpace "on edge" as shown, it has less of a tendency to crush. Butt joints will appear as if they have been mitered without having to be so precise (center diagram).