Roger. That grille is where the fresh cabin air comes into the car. That cavity also contains ALL of the wiper linkage etc. There are two drains in this cavity. There is one drain on each side of the car. The firewall material tends to rust out around where the blower motor and duct assembly pass through the firewall. To inspect for this rust, you'd have to first remove (at least take all the fasteners out of) the right inner fender well, remove the fender brace that runs from the top of the fender to the firewall, remove the power antenna, remove the blower motor, then you can remove the big duct assembly from the firewall. You may have to disconnect a few heater hoses etc. to gain access to the air box. ----- Original Message ----- From: "Roger Cooper" <RCOOPER9@xxxxxxxxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Monday, November 24, 2003 2:45 PM Subject: IML: water leak Okay guys what do you call the part of the car below wind shield wipers that has either a wire or plastic screen acrossed it ,, what purpose other than hold the wiper does this chamber provide does it let fresh air into the car, does it have a drain in it at the far ends by the fenders? Any way when I spray water in this chamber directed at passenger side only I get a rather large water leak on my floor board this is a 74 Imperial what cause this problem you can not see in this area or get your hand in very far.!!! Oh yes the drain for this chamber at back of engine block is open Roger Cooper