A device for retaining a plurality of fiber tubes includes a bottom side, a top side, and outer sidewalls extending between the top and bottom sides. First and second groups of fiber tube receptacles in the top side and extend between first and second opposite facing outer sidewalls. First, second and third anchor points of the device each have a pair of fastener perforations extending through the top and bottom sides. First and second anchor points are arranged outside of the first and second groups of fiber tube receptacles. The third anchor point is arranged between the first and second groups. Each of the fiber tube receptacles has a first diameter in outer longitudinal regions and a second diameter in a central longitudinal region, the central longitudinal region being disposed between the outer regions. The first diameter is greater than the second diameter.