The T-Block (Short Leg) typically makes up 1 - 2% of the ICF wall assembly on most residential and commercial jobs. This block has eight (8) strong full length injection molded plastic ties made from Polypropylene (PP) regrind resin that are well marked with the word "Fox Blocks" located on all sides of the block. These ties secure the three pieces of 1.5 pcf density modified Expanded Polystyrene (EPS) foam together that makes up each block type. The blocks are stacked tightly together and inter-locked end to end to the adjacent Straight Blocks.

T-Blocks are typically used in foundation walls where two walls intersect each other, an exterior wall to an interior wall. The T-Block is engineered/designed to minimize the amount of form bracing and eliminate blow-outs during the placement of the concrete. Once a T-Block (Short Leg) is installed, horizontal reinforcing steel bars are inter-locked securely together in the ties of the blocks. The next T-Block to be installed on top of the short leg, is the long leg block to improve construction wall strength by alternating all end block wall connection joints during installation.