Octo Lids™ I've been making plastic mesh screen tops since 2010... BEFORE ANYONE ELSE! I use 3/8" clear plastic and 1/4" clear mesh netting. Cutouts and feed doors are available upon request. If you have plastic trim on your tank, the lid will sit on the inside ledge of the trim. If you have a rimless tank, the lid will sit on 2" tabs on the tank rim and the lid will sit down inside the tank approx. 1/8". * Octo Lids™ should not be used in applications where the lid will get saturated with water. For more information please see the warranty page. * Turnaround time is generally around 3-4 weeks. Sometimes faster! * Hinged feed doors (4″ x 3″) are $25 extra! * Cut-outs are $FREE! Order HERE.