Not a door port. The port (pork) hole goes through the side door step so your door is uncut. Secure and really quiet. Hydramaster has been putting them in our trucks since 1994.I have never seen one with a door port... but I will take your word for it. Seems like a good idea to prevent theft and liability issues if a kids crawls into the van. I din't know that HydraMasters cds did that.