Abstract: Pullboxes for enclosing utility components and methods of manufacturing the same are provided. In some embodiments, a pullbox has at least one knockout section that is an area of the sidewall of the pullbox that has a reduced thickness. Apertures to receive conduits through the knockout section can be created with far less effort that traditional pullboxes. The conduits allow various utility components to pass through the wall of the pullbox. In addition, the discrete knockout section preserves the structural integrity of the pullbox, and the knockout section can have features that promote certain actions during a molding process for manufacturing the pullbox. Additional features such as a reinforcement mesh embedded in the pullbox in a certain manner and location are also described herein.