Net #32HD 1X25X150 Heavy Duty Top Flight Netting- Made from Olefin fiber, a flexible material that helps prevent injuries to birds. One inch mesh is recommended for quail cages. Netting is available in two strengths. Heavy duty is recommended for customers who live in locations that can expect snow accumulations. Top Flight's extra width makes it easy to handle, enabling ease of installation. Top Flight is not recommended for the sides of aviaries as it is not rodent proof.