Ducting Mylar 25' Box - Flexible Ventilation Duct size:4" / 25' box Mercury Content: 80mg

Mercury Content: 80mg

Day/Night detection to turn off CO2 enrichment during the night

which supports your root zone

be applied to fruit trees and vegetables up to the day before harvest

Ducting Mylar 25' Box - Flexible Ventilation Duct size:4" / 25' box Mercury Content: 80mgConnect your ventilation system with confidence using this professional grade mylar ducting. Engineered for indoor gardens and greenhouses, this 25 foot flexible duct delivers reliable airflow between fans, carbon filters, and other ventilation components. Key Features Durable 2 Ply Construction Reinforced casing resists tears and maintains shape over time Metal Wire Helix Prevents collapse and ensures consistent airflow even when bent Universal Fit