Fence system

A fence system comprising:

• at least one post for extending upwardly from a foundational surface, the at least one post being elongated along a longitudinal axis, the at least one post having opposite ends defining a length of the at least one post, a first end of the opposite ends being for positioning above the surface and a second end of the opposite ends being for positioning at or below the surface, the at least one post being at least partially tubular in character with a perimeter wall, extending about a substantially hollow interior of the post;
• at least one rail for extending from the at least one post, a portion of the rail being positionable in the interior of the at least one post, the at least one rail being elongated with opposite end portions, the at least one rail having a peripheral surface;
• wherein the at least one post has a rail aperture configured to receive a portion of the at least one rail thereinto, the rail aperture being defined by an aperture edge of the perimeter wall, the aperture edge having a main portion;
• wherein the rail aperture has a securing tab, the aperture edge of the rail aperture defining the securing tab, the securing tab protruding from the main portion of the aperture edge, the securing tab being elongated with a base end and a free end, the securing tab being defined by a tab portion of the aperture edge, wherein the tab portion include at least one extension section extending longitudinally away from the main portion of the aperture edge;
• and
• wherein the securing tab is deflectable from an undeflected condition to a deflected condition, the deflected condition being characterized by a portion of the securing tab being deflected along the extension section and oriented at an angle of approximately 90 degrees with respect to the undeflected condition.