When you want premium sound damping without the weight, at 0.45 lbs/ft2, Stealth is comprised of a black aluminum layer at 4 mils with a lightweight butyl layer

9-Pack: 18" x 32" per Sheet
36sq-ft. total

Stealth black aluminum
Lightweight construction:0.45lbs/ft2
Self-adhesive
Easy installation
25% Less weight

Minimum Thickness: 1.5mm
Aluminum Layer: 2 mil
Peel Adhesive Strength: 38.24 lb/in after 24 hours
Application Temperature: -60F to 300F