Poly foam reduces the amount of caulk needed to fill or seal large openings.
Frost King 0.375 in x 20 in. Grey Poly Foam Tape Weatherstrip
Frost King 20-oz Gray Paintable Solvent Caulk in the Caulk
Frost King 30-ft x 1-1/4-in x 3/16-in Grey Foam Door Weatherstrip
Frost King 10-ft x 1/2-in x 3/4-in Grey Vinyl Window Weatherstrip
Weatherstripping & Weatherseal Frost King® Weatherization Products
Panel gapping body filler technique?
Caulk Saver Frost King® Weatherization Products
0.375 in x 20 in. Grey Poly Foam Tape Weatherstrip Caulk Saver
Caulk Saver Frost King® Weatherization Products