Idrolab - Idroroll with TraysOverview These space saving benches allow you to literally roll your grow space and to create an aisle where you need it, when you need it! The Idrolab rolling bench system is made of heavy duty metal and will maximize the grow space in your greenhouse or grow room. These benches come with durable trays made in ABS plastic. The trays are designed to easily connect to each other so you don't need to cut the trays. Benefits Maximises usable space in