https://aquaticsunlimited.com/product-category/nets-accessories/dividers/
Tank Dividers - Aquatics Unlimited
Tank dividers allow you to separate fish due to aggression, incompatibility, or for breeding purposes. Sized to fit most standard size aquariums.
tank dividersaquaticsunlimited
https://zsyst.com/product/skb-3i-1510-6dt-case-with-think-tank-photo-dividers/
SKB 3i-1510-6DT - Case with Think Tank Photo Dividers - Z Systems, inc.
SKB and Think Tank Photo have teamed together to create high-quality interiors to provide the best of both worlds: a soft case with the strength and durability...