WHIRLyGIG Manhole Riser/Collar Systems
10 years and over 65,000 installations

Welcome to Whirlygig, Inc. 

Improve your manhole riser collar installations with our patented riser forms and method of installation.  It’s accurate, it’s easy and it makes quality control a breeze.   Please take a look at our demonstration video and give us a call at 800-307-4263 with any other questions.  We believe that you will soon find the one simple fact that we stand behind everyday …Whirlygig simply works!

Thank you.