An optical fiber distribution assembly is disclosed. The assembly includes an enclosure formed by a circular base and a cover joined at a waterproof seal. The base includes openings configured to accept an input cable and an output cable. The assembly also includes an inner body formed by four panel members to define four quadrants. In one example, the inner body is formed by two panel members positioned perpendicularly to one another. Disposed on the inner body are plurality of cable management structures including: radius limiters, splice trays, splitters, terminations, and connector storage holders.