A frameless window module allows operable windows to be placed in any location of a wood stud frame wall without compromising the load bearing capability of the studs thereof. By using lift-off pivot hinges, two (2) panes of glass are respectively pivotally mounted to the exterior and interior surfaces of the wood stud frame wall. Pneumatic gaskets enable to controllably regulate the air interspace captured thereby to provide a variable-insulation aperture. Interconnection hinges cause the two (2) glass panes of a module to move in concert and/or serve to securely lock them in their closed position.