Johnson CO2 Generator Size:Natural Gas 115v Benchmaster™ Tri-Level Round Display Features:

Benchmaster™ Tri-Level Round Display Features:

(1) 3' wide x 6' 8" tall storm door with 2 pane glass and screens Sturdy aluminum storm door

hook effortlessly fits over smaller tree branches or adds extended length to other hooks with an elegant curvature that complements your yard

Half rounds can be used alone against walls in tight places

1-1/4" Medium Cut

Johnson CO2 Generator Size:Natural Gas 115v Benchmaster™ Tri-Level Round Display Features:Normally there are approximately 300 parts per million (PPM) of CO2 in the atmosphere; when this level is increased to over 1000 PPM, it results in higher production and better plant quality. The Johnson Generator provides up to 1500 PPM per unit in a 4800 square foot (446 square meter) greenhouse. By adding CO2, especially during the winter months when greenhouse ventilators are closed and when low CO2 concentration becomes a limiting factor in