Athena CULTURE LINE VPDome is the most efficient way to clone. The easy-to-install fabric rack cover can hold 16 standard clone trays without the need for individual domes. Simple operation streamlines nursery workflow (2-4 hours labor savings per month per rack). Uniform and consistent VPD reduces mortality and speeds rooting. Durable construction reduces costly plastic dome replacements. Anti-microbial coating reduces disease vectors. USAGE INSTRUCTIONS VPDome fits perfectly over a standard wire rack (48" W x 72" H x 18" D) Install bottom rack cover Place cover over top of rack Close door with magnetic seals