Acrylic tube. replacement tube | custom cut Shipped to the Contiguous United StatesPlease contact us if you need custom length. We can custom cut the exact length you need. We do not drill holes We have 3″, 3 1/2″ , 4″ and 5″ in diameter OD if you are looking to replace the tube on our large gazebo bird feeder then you will need 4″x 11 7/8″ for the Small Poly Bird Feeder The wall is 1/8″ thick. The inside dimension will be 1/4″ smaller