how do I connect the heat/air condition vent to the toe kick?
 

We justput up new kitchen cabinets and it's blocking the vent. How can i connect the vent to the toe kick? What kind material can I use? Is that something I can connect? Thankyou

If we knew whether your coming up from the floor, down or thru a wall, we could better advise you on the approach but, to simplify things, you'll need to cut a path to run your ductwork to the register. You can use rigid or flexible, insulated or non-insulated duct. They make reduced size ducts, adapters and registers for this purpose.