Frost King & Thermwell Products Co., Inc.

Frost King & Thermwell Products Co., Inc.
Frost King customers have been feeling the difference for more than 60 years, insulating their homes from the basement to the roof, from front to back.
 Frost King is the original

Frost King is the original. It started by inventing the first do-it-yourself weatherstripping kit.

Just 17 feet of felt carpet strips and some nails that ignited America’s DIY revolution. 

Frost King has stayed true to its core values

Since then, Frost King has stayed true to its core values. Ensuring that its products are best-in-class, easy to apply and never look messy while keeping homes warm in the winter and cool in the summer.

No more freezing and hot drafts flowing through and skyrocketing your energy bills.

Keeps frosty winds out
 Frost King is the original
Frost King is available at more than 10,000 stores nationwide and many retailers worldwide. Its products cover the entire house – not just doors and windows. Pipes, ducts, electrical outlets, and much more.
Frost King has stayed true to its core values
Since that day when it all started, Frost King has remained the admired market leader in weatherstripping. By reducing your energy bills and making your home cozier - and instantly feeling the difference.
That makes everyone in your home happy.

Frost King Movie

Thermwell Products Co., Inc.
also manages the following companies: