Grow healthy plants from seed in your home or greenhouse. Will fit most standard seed trays. Suitable for striking cuttings. Instructions for use: As plants grow allow ventilation by propping open one side of the lid by approximately 1cm Place in a bright position but not in direct sun light. Never allow compost to dry out, keep moist at all time.Size Check: 37.5cm (14.75″) Long 24cm (9.5″) Wide 8.5cm (3.25″) High