Severe Weather 4-in x 8-in x 12-ft #2 Square Ground ntact mmon Dimensions: 4-in x 8-in x 12-Ft; Actual Dimensions: 3.5625-in x 7.5-in x 12-Ft #2 grade Hem fir. Pressure treated for exterior ground ntact use. Suitable for burial or ntact with the ground and fresh water immersion applications. Treatment meets AWPA (American Wood Protection []