Holder for Sinkor LED II 45 cm WRB 15W //  Wifi LED Control,  that fits into Juwel primo 70 aquarium cover, so you can simply attach this light using screws. Use 3,5*15mm screws (best option is to use stainless steel screws. PETG prusament. 0,20mm layer height. Big thanks to my best friend Kormizz, who helped me with the design and fusion 360. There are two version, one is material saving. Enjoy.