[Robust Construction]Crafted meticulously from high-impact, ABS material, each kit includes 8 vents measuring 8 inches in length and 2.6 inches in width. Seamlessly fit your shipping containers using sturdy, fixed installation. [Effortless Installation]Set these vents up with ease, using only 3 bolts per vent(no includ) for a secure attachment. Strategically oriented holes they are positioned to prevent water ingress, enhancing their efficiency and durability on any container. [Optimized Air Flow]Dramatically enhance the air circulation inside your storage or shipping containers. These vents are engineered to not only reduce excessive heat and humidity but also balance internal air pressure and minimize condensation build-up. [Weather-Resistant Design]Equipped with a reliable rubber gasket for impeccable sealing, these air vents effectively prevent rainwater penetration and other environmental elements from compromising your container's interior. [Innovative Downward Tilt]Experience enhanced protection with a novel design feature: the bottom-oriented, inward-tilting holes in each vent. This considered positioning utilizes to deter water entry while promoting optimal airflow, safeguarding your cargo or storage items from moisture and other air-related issues. The actual product may have slight color difference or difference, which will not affect the use Colour:Photo Color Material:plastic Package Contents: 8 x truck ventilation cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.