A system used in tile double-hung and tilt single-hung window units that allows the sash or sashes to be raised and lowered easily.

A block and tackle system used in the jamb liner of Double Hung or Single Hung units.

Spring loaded single/double hung vent support system.

the accumulated surplus of income over expenditure which can be used to finance expenditure. Amounts in excess of that required for day-to-day cash management and to finance working capital can be invested.

the total accumulations in a member's accounts.

The darks and lights, verticals and horizontals, etc., that make up the design of a layout.