The 00Box Herbal Storage Box with Resin Extraction Screen The 00BOX is made of cedar wood. We have chosen cedar wood to make our special product as it’s the best of the noble woods to cure plant matter. i.e. not porous but at the same time allows the plant matter to obtain the aroma and flavour of the wood, increasing its qualities. The 00BOX has a 130 micron silk screen in its bottom which only allows the mature glands to filter into the drawer situated below. So that the plant matter does not lose its taste and aroma, we have incorporated to the 00BOX a hygrometer to monitor the humidity and a humidifier to control it. A small sponge provides the necessary humidity. The ideal humidity is approx 60%.