Specifications:

Ideal for holding four 10x20" Seedling Trays per level (2x levels total) , this room works great with multiple 4' T5 fluorescent lighting system (an 8 lamp fixture works best).
Material:

Interior: highly reflective thermal film
Exterior: waterproof black canvas
Recommended lighting:

multiple T5 fluorescent systems
Dimensions:

Assembled: 4'1" wide x 2'1" deep x 3'11" tall / 49.2" x 25.6" x 47.2" tall / 125 x 65 x 120cm
Packed: 4.2' wide x 2.3' deep x 0.47' tall / 50.8" x 27.2" x 5.6 " tall / 129 x 69 x 14.3cm
Ports:

Intake/Exhaust: (3) - 8" / 203mm (port adjusts to fit smaller-diameter ducting and equipment as well)
Reflector Cooling: (2) - 4" / 101mm (port adjusts to fit smaller-diameter ducting and equipment as well)
Cord access: (2) - 4" / 101mm
Miscellaneous:

Intake windows: 3
Doors: 1
Clear viewing windows: 2