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K Value
The k-value, or heat transfer coefficient, is the measured value of the heat flow which is transferred through an area of 1 m² at a temperature difference of 1 K. The units of measure are watts per square meter per temperature difference (W/m²K). K-value = energy / (area x temperature difference x time). [top]
Keeper
See Strike Plate. [top]
Keychase
The part of an extrusion designed to receive and hold self tapping machine screws. [top]
Keyway
The keyhole of a cylinder lock [top]
Kick Plate
A plate applied to the face on the bottom of a door or sidelight to protect against abrasion or impact loads or to maintain sight lines. [top]
Knocked Down (KD)
Unassembled/Uninstalled window or door unit. [top]