Philips Turaco Outdoor Lamp Replacement Cover

My brother has 10 Philips Turaco outdoor lamps and after 3 years under the sun, the light cover starts to disintegrate. Since Philips does not provide any replacement parts we decided to print the replacements ourself. When installed in the lamps the difference is only visible from a few centimeters away.
I added two pictures for comparison.
 

I used transparent PETG from Extrudr for the ones in the pictures. 

Print them with the front facing side down and set Top/Bottom Line directions and Infill Line directions to [0,90]. I used tree support for the top area.