Ustensiles De Cuisine / Belgique Demandes

We are a waffle company (located in Belgium) and during the production of our waffle dough, we place our dough pieces in a plastic tray. These trays are 29cm x 49cm, have 26 compartments and weigh about 37gr. They are quite rigid. I don't know if you already have a product that could match or if you can make one?