12'' Light Proof Black Ducting Ventilation trim This translates to lower heat

This translates to lower heat

R6 lights (60% red) complement HID top lights that are high in ROY

and minimal loss of trichomes

and 5 ml per gallon in propagation and cloning machines

12'' Light Proof Black Ducting Ventilation trim This translates to lower heat12'' Light Proof Black Ducting Ventilation Light Proof Ducting is strong, durable, and as the description indicates light proof. That means that when properly installed no light will penetrate the ducting and disrupt your plants' lights out schedule. The ducting is also durable with multiple layers of inner liners to protect from punctures from sharp objects.