20cm round cat-proof aquarium lid; the mainstream options are 3mm tempered glass / acrylic, featuring ventilation and feeding ports, non-slip snap locks, and functions to prevent cats from jumping in, keep out dust, and reduce evaporation.

I. Mainstream Materials and Selection (20cm Diameter)

1. Tempered Glass Lid (Recommended)

• Thickness: 3mm, offering high-definition clarity, strong load-bearing capacity, resistance to cat scratching and biting, and excellent dimensional stability.

• Standard Features: precision-ground rounded corners, ventilation and feeding ports, and widened snap locks / locking brackets for secure, non-slip installation.