This high quality, economical swivel air vent is made from 2024T351 aluminum and is available anodized black or grey. Diameter of the flange is 2.75" and the vent is designed to attach with a standard 2" air duct flange. The vent hole of this eyeball swivel vent is 7/8". The knurled collar on the vent swivels 60° to adjust air volume anddirect air flow as desired.
The vent features 4 mounting holes (1/8" dia.) which are spaced 2-3/8" apart or a mounting plate with a thickness of .71".
Very nice quality. There is a small air leak if extra lubricant is not applied. Read the included instructions, disassemble and add lubricant.
Yes, this vent can be rotated fully closed by turning it 90 degrees clockwise. Here are the installation details: "The body of the air vent requires a 1.850 diameter or larger clearance hole. The vent is secured using 4 #10 screws located on a 2.375 diameter bolt circle. The ball and nozzle subassembly can be removed for access to the back if machine screws and nuts are used rather than sheet metal screws."
The manufacturer offers a round flange, part number 10350-8, but it does not have the mounting holes drilled. The installer must drill the holes. 10-32 flush head screws can be used to mount the unit. The vent on the panel, and the flange mounted on the back side, as mentioned in the question.
Yes, it does.
These are priced and sold individually. 1 vent for an order of 1.
This unit will accept a 1-7/8" ID ducting.