Polyhouse drainage sheets made by Shri Ji Irrigation are a result of companyâs experience, knowledge, resources and technical facilities. These sheets are environmentally friendly and completely recyclable. Designed for growth and conservation purposes in agriculture, these sheets add value to polyhouse. These sheets are a solution to problem of low temperatures in open field crops. The greenhouse drainage sheets are better than GI sheets, because these can prevent heating with outer temperature and are cost-effective. These sheets provide flexibility in installation. These greenhouse drainage sheets are transparent, hence transmit maximum sun-rays. These sheets are light in weight, UV stabilized, and can be availed in standard and custom sizes.