to about 1 inch 2 5 cm for the embodiment in which the outer rubber coating is grooved the lands of the coating may be in approximately the same ranges of thickness as those of the solid outer wall coating with the coating at the base of the groove being between about 1 8 and 3 8 inches 0 3 and 1 cm the longitudinal channels 22 and 23 and 50 and 51 formed by the frames are typically about 1 8 inch wider and about 1 16 inch deeper than the actual cable size in the finished rubber coated protector the channel slots such as 25 are provided to the actual control line size typically about 11 8 inches 2 85 cm wide by about 7 16 inch 1 1 cm deep although each half of the protector clamp may be provided with channel slots of a size appropriate for larger control lines it is often desirable to provide one or more small line or single wire slot channels such as those designated 26a and 26b these smaller slot channels may typically be from 1 4 inch 0 6 cm to 3 8 inch 0 95 cm wide and from about 1 4 inch 0 6 cm to about 3 8 inch 0 95.