1020 Blackout Humidity Dome

Maximize Germination with Complete Light Control The 1020 Blackout Humidity Dome is designed to create the ideal germination environment for seedlings and microgreens by combining humidity retention with a full blackout period. Made from extra-strength recycled plastic, this heavy-duty dome helps regulate moisture, reduce watering frequency, and promote faster, more uniform sprouting. By blocking light during early growth stages, blackout domes encourage stronger root development and improved germination rates—especially important for microgreens and sensitive seedlings. The snug fit over standard 1020 trays ensures consistent conditions, while the adjustable humidity vent allows you to fine-tune airflow as plants develop. Available in both 2.5" and 6" heights, this dome adapts to different growth stages and crop types. An integrated easy-grip handle makes lifting and monitoring simple, and the durable construction ensures long-lasting performance in propagation rooms, grow racks, and indoor farms. Features & Benefits: Designed for standard 1020 trays Provides complete blackout for improved germination Extra-strength recycled plastic for durability Adjustable humidity vent for airflow control Reduces watering needs by retaining moisture Easy-grip handle for quick removal Available in 2.5" and 6" dome heights Made in the USA Dimensions (6" Dome): Exterior: 21¼" x 11" x 6" Interior height clearance: 5½" Note: Not intended for use in direct sunlight. Not sure how to use a blackout dome? Read Microgreens and When to Use a Blackout Dome.