Duck Brand Insulating Foam Pipe Covers, 0.75-Inch by 3-Feet, Pack of 4 Sticks, 1285241 Duck Brand insulating foam pipe sticks are great for insulating both hot and cold pipes Prevents winter freezing and summer sweating Safe for temperatures up to 212-Degree-Fahrenheit Versatile sticks are pre-slit for easy opening and installation on curved pipes and the self sealing edges make it easy to secure 3-Feet sticks fit 3/4-Inch I.D. copper pipes and come four to a pack