Wire mesh screw in vents. Ideal to increase ventilation in plastic tubs and stop escapes. 
 
Come in two sizes:
Large - Outer 50mm, Inner 40mm
Small - Outer 40mm, Inner 30mm
 
Simply cut a hole in the side or roof of the container to meet the inner size. Pop the vent through and screw in from the inside. Easy to fit.
 
Come as standard Black and White but can be made in other colours and quantities. Please contact us for larger quantities and other colours
 
Made by our friends at Reptile3Dprint