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P
- Pane
- One of the compartments of a door or window consisting of a single sheet of glass in a frame; also, a sheet of glass.
- Panel
- A major component of a sliding glass door, consisting of a light of glass in a frame installed within the main (or outer) frame of the door. A panel may be sliding or fixed.
- Panning
- In replacement window work, the outside aluminum trim that can extend around the perimeter of the window opening; used to cover up the old window material. Panning can be installed in the opening before the window, or can be attached directly to the window before installation.
- Particle dispersed glazing
- Glazing in which the orientation of small particles between two sheets of glass is controlled electrically, thus changing its optical properties.
- Parting stop
- A narrow strip, either integral or applied, that holds a sash or panel in position in a frame.
- Peak load
- The maximum thermal load to be provided by a heating or cooling system in a house.
- Photochromics
- Glazing with the optical properties that change in response to the amount of incident light.
- Picture window
- A large, fixed window framed so that it is usually, but not always, longer horizontally than vertically to provide a panoramic view.
- Pivot window
- A window with a sash that swings open or shut by revolving on pivots at either side of the sash or at top and bottom.
- Plastic film
- A thin plastic substrate, sometimes used as the inner layers in a triple- or quadruple-glazed window.
- Plastics
- Artificial substances made of organic polymers that can be extruded or molded into various shapes including window frames and sashes.
- Plate glass
- A rolled, ground, and polished product with true flat parallel plane surfaces affording excellent vision. It has been replaced by float glass.
- Polyvinylchloride (PVC)
- An extruded or molded plastic material used for window framing and as a thermal barrier for aluminum windows. Sometimes called vinyl.
- Projected window
- A window fitted with one or more sashes opening on pivoted arms or hinges. Refers to casements, awnings, and hoppers.
