Celblox Insulated Concrete Form - 6" Straight
An ICF is an insulating concrete form. A flat panel CELBLOX insulating concrete form is a permanent, open cavity block made from two 2 ½” thick, 16” high x 48” long, 1.5# density, flame retardant panels molded out of expanded polystyrene. 90° and 45° corners, taper tops, brick ledges, single sided and extender blocks of the same construction are also available. Within the outside panels are molded twelve polypropylene “webs” which later serve as fastening strips and which function similarly to the way wood studs accept nails and screws.