2"

3"

3 1/2"

4"

4 3/8"

5"

6"

8"

12"

18"

24"

28"

30"

32"

33"

36"

40"

42"

45"

46 1/4"

48"

50 1/2"

66"

72"

84"

Adhesive

Adhesive Back

Bolt In

Fastener

Freestanding

Glue On

Nail On

Tape On

2.5 lb.

3 lb.

10 lb.

16 lb.

3"

4"

6"

30"

42"

45"

46 1/4"

50 1/2"

1 3/8"

3"

4"

4 1/2"

5 1/2"

6"

6 1/2"

8 1/4"

8 1/2"

18"

Yes

No

EAR99

2 1/4"

4"

7 3/4"

Metal

Plastic

1

2

4

9

14

Closed

Open

ASTM D4280

California D.O.T. Standard Specifications Section 81-3

MUTCD Standards

UL 1598

4 1/4"

6"

8"

8 1/2"

11"

11 1/2"

12"

14"

14 1/2"

15 1/4"

16"

20 1/4"

4 1/4"

6"

8"

8 1/2"

11"

11 1/2"

12"

14"

14 1/2"

15 1/4"

16"

20 1/4"