The author remixed this model.
Edit Edit - added a thickened model at the clips - also removed the holes to allow user to select infill… recommend printing with NO top or bottom layers, 4 wall loops, and select your infill - I went with Honeycomb.
Edit - created a mod for a 15mm x 10.5mm light bar (user request)
I've created this remix to the Dean_62 light bar holder to mod it to my light bar (below). I also added some fillets to the retention clips to help it slide on nicer.
https://www.amazon.com/gp/product/B0B1QT6NWP/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1