Though they don't seem to be meant for continual foot targeted traffic, the 10mm fluted polycarbonate include will hold up to 500 lbs. of weight and prevent members of the family from accidentally slipping to the window well. The four″ perforated drain tile used in this system generates a circulation https://moldremediation.blogzet.com/a-secret-weapon-for-mold-remediation-47434264