UnderGround Downspouts - How to install downspout extension kit

Order your UnderGround Downspout: downspouts.com
UnderGround Downspouts are downspout extensions made to keep roof water away from your home's foundation. It's entirely underground removing all obstructions versus traditional downspout extensions that lay across the lawn. You can even mow right over them!

[@hicksnumber3]

can this be used with schedule 40 pvc?