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Rack Units

Height (in)

Height (ft)

Height (cm)

1U

1.75″

0.15′

4.4 cm

2U

3.5″

0.29′

8.9 cm

3U

5.25″

0.44′

13.3 cm

4U

7″

0.58′

17.8 cm

5U

8.75″

0.73′

22.2 cm

6U

10.5″

0.88′

26.7 cm

7U

12.25″

1.02′

31.1 cm

8U

14″

1.17′

35.6 cm

9U

15.75″

1.31′

40 cm

10U

17.5″

1.46′

44.5 cm

11U

19.25″

1.6′

48.9 cm

12U

21″

1.75′

53.3 cm

13U

22.75″

1.9′

57.8 cm

14U

24.5″

2.04′

62.2 cm

15U

26.25″

2.19′

66.7 cm

16U

28″

2.33′

71.1 cm

17U

29.75″

2.48′

75.6 cm

18U

31.5″

2.63′

80 cm

19U

33.25″

2.77′

84.5 cm

20U

35″

2.92′

88.9 cm

21U

36.75″

3.06′

93.3 cm

22U

38.5″

3.21′

97.8 cm

23U

40.25″

3.35′

102.2 cm

24U

42″

3.5′

106.7 cm

25U

43.75″

3.65′

111.1 cm

26U

45.5″

3.79′

115.6 cm

27U

47.25″

3.94′

120 cm

28U

49″

4.08′

124.5 cm

29U

50.75″

4.23′

128.9 cm

30U

52.5″

4.38′

133.4 cm

31U

54.25″

4.52′

137.8 cm

32U

56″

4.67′

142.2 cm

33U

57.75″

4.81′

146.7 cm

34U

59.5″

4.96′

151.1 cm

35U

61.25″

5.1′

155.6 cm

36U

63″

5.25′

160 cm

37U

64.75″

5.4′

164.5 cm

38U

66.5″

5.54′

168.9 cm

39U

68.25″

5.69′

173.4 cm

40U

70″

5.83′

177.8 cm

41U

71.75″

5.98′

182.2 cm

42U

73.5″

6.13′

186.7 cm

43U

75.25″

6.27′

191.1 cm

44U

77″

6.42′

195.6 cm

45U

78.75″

6.56′

200 cm

46U

80.5″

6.71′

204.5 cm

47U

82.25″

6.85′

208.9 cm

48U

84″

7′

213.4 cm