Sizes & Materials Available For Confined Space Signs Size 7 (7" x 10") V PL A V=vinyl PL=plastic A=aluminum Size 10 (10" x 14") V PL A Size 14 (14" x 20") V PL A Meet the OSHA standards for CONFINED SPACES with these signs. "Entry permit spaces" must be limited to trained personnel with written permission to enter. You can find more Danger Signs here.