The Hydrofarm Vented Humidity Dome is designed to help improve seed germination by retaining moisture and warmth during early plant growth. This clear 2 inch dome fits standard 10 x 20 inch seed trays and creates a controlled environment ideal for seedlings and cuttings. Three adjustable vents allow growers to regulate airflow, temperature, and humidity as plants develop. Made from durable clear plastic, the dome allows light penetration while helping maintain consistent growing conditions. Ideal for greenhouses, grow rooms, or indoor seed starting, this humidity dome supports healthy germination and early-stage plant growth.