You can use either a compression coupling or a mechanical coupling to connect both. Come in all sizes. Home Depot, Lowes, Ace Hardware, Menards.
http://www.homedepot.com/p/4-in-Service-Weight-Cast-Iron-Hub-x-4-in-Sch-40-PVC-Compression-Coupling-P44U-405/100372279
http://www.homedepot.com/p/4-in-x-4-in-PVC-DWV-Mechanical-Flexible-Coupling-P1056-44/100372298
We seem to have some unwelcome Mickeys and Minnies in our house. What is the best way to get rid of them?
I want to remove my popcorn ceiling, but it has asbestos in it. How do I go about this safely?
How do I fill gaps at baseboard, should I caulk? If so, does anyone know how to caulk baseboards?
How do I fix squeaky hardwood floors?
You can use either a compression coupling or a mechanical coupling to connect both. Come in all sizes. Home Depot, Lowes, Ace Hardware, Menards.
http://www.homedepot.com/p/4-in-Service-Weight-Cast-Iron-Hub-x-4-in-Sch-40-PVC-Compression-Coupling-P44U-405/100372279
http://www.homedepot.com/p/4-in-x-4-in-PVC-DWV-Mechanical-Flexible-Coupling-P1056-44/100372298