A fiber enclosure with an integrated enclosure mounting system includes a base, a cover, and a clamp for securing the cover to the base. The base has an end wall with through openings extending therethrough and has a fiber management mounting frame provided on an inner side of the end wall. The mounting frame is configured to receive fiber management trays and the cover is engageable over the mounting frame and into abutment with the base and is securable to the base by the clamp to fully enclose the mounting frame and fiber management trays within a cavity formed between the cover and the base. The base also includes enclosure mounting sockets formed on an outer side surface thereof. The enclosure mounting sockets are releasably engageable with complementary shaped mounting post provided on a mounting arm to releasably secure the base to the mounting arm.