Order this Great Stuff Pro Gaps & Cracks Spray Foam Insulation for delivery. Insulates and seals cracks and openings up to 3 in. to help prevent drafts, moisture and insects. Ideal for use with great stuff pro foam-applicator guns. Energy Star compliant. US fireblock rating (always check your local fire codes). Identifiable orange color. The right insulation can save on energy and heating and cooling bills.