Unimaxx™ White Roof Vent Lid for Elixer/Heng's/Jensen/Ventline Roof Vents (00335001) by Maxxair®. Replace damaged or old vent lids with one, easy-to-install universal vent lid. The Unimaxx Universal Vent Lid takes the hassle out of having to know what year your current lid was manufactured and who manufactured it. Eliminates the need to match hinge types. Replaces damaged vent lids on Elixir, Hengs, Jensen, Ventline and other roof vent Assemblies. For superior protection of the Unimaxx, the universal hinge is designed for fast and easy installation of the Maxxair Original Vent Cover and zero-leak hardware.