Shelf door with 4 snap hinges( 2 packages) made from 1/4" tempered Plexiglass.
Though not titled, the Pantographic replacement Arms are visible with the original 11.5" blades mounted. Replacement 14" SS curved blades are 'in house' ready to install when these wear out.

Shelf door brass snap hinge bought at LOWES and coated with KRYLON Acrylic clear spray, brass screws coated with a black Sharpie to blend in.

Cabin shelf viewed from below . The RADAR power cable is off center as it passes over the shelf. A second notch was equally placed off center to starboard as a finger hole to pull down and open the door.

Close up view of hinge and its brass hardware.

Brass screws marked with a black Sharpie to blend in with antique brass hinge color.
The fan with the blue blades is powered from the 'cabin lights' switch. It has been modified with a switch to allow it to have a 2 speed function. This is done with a series of diodes mounted inside the base to reduce the voltage to the motor; thus the speed by 1/2.