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© 2020 CommScope, Inc.
TC-96292-IP
3.7 Installing Aftermarket Rack Numbering Labels
The same 43 RU 19” seismic equipment rack is used in both the 36 RU Flex Frame (ODF-
FF19CM-36RU) and the 40 RU Flex Frame (ODF-FF19CM-40RU). In both applications, several
rack units are sacrificed at the bottom of the rack for the lower trough system and the rack pass-
through radius limiters. As such, the silk-screened rack unit numbering provided on each side of
the two vertical rails on the rack must be updated with adhesive rack unit numbering tape to
reflect the correct RU numbering for the particular frame. Use the following procedure referring to
Figure 14. Silk-Screened Rack Unit Numbering
For the 36 RU Flex Frame (ODF-FF19CM-36RU) – locate the four rolls of adhesive RU labeling
tape and carefully cut off and discard the RUs numbered from 37-52 from each tape. Beginning
at the uppermost rack unit on the rack, begin applying the label tape over the silk-screened
numbering so that only the adhesive label numbers are visible and work your way downward
from top to bottom. At the top of the rack, the silk-screened RU number 43 should correlate to the
adhesive RU number 36 and at the bottom of the rack, silk-screened RU number 8 should
correlate to the adhesive RU number 1. Repeat this procedure for the remaining rack rails.
For the 40 RU Flex Frame (ODF-FF19CM-40RU) – locate the four rolls of adhesive RU labeling
tape and carefully cut off and discard the RUs numbered from 41-52 from each tape. Beginning
at the uppermost rack unit on the rack, begin applying the label tape over the silk-screened
