| Single hung window |
A window in which only the bottom sash operates vertically up and down. The sash is held in the open position with the use of block and tackle balances. The top glass is glazed directly into the window frame. A one-half screen is optionally available. |
| AAMA certified windows |
AAMA certified windows: An independent certification program that tests compliance with performance specifications. Manufacturer labels products to certify that it matches the test samples. |
| Annealed glass |
Ordinary glass, not tempered. |
| Balance |
Each window operating sash contains two block-and-tackle balances. The balances support the sash to an open position. |
| Balance covers |
Rigid vinyl extrusions applied to the jambs that cover the balances and provides finished trim look for the window jambs. |
| Cam Sash Lock |
A lever operated sash lock which is used to prevent intrusion from the outside through the sash. Cam lock(s) are factory installed on the top of the operating sash. |
| Casing |
Inside casing, supplied by others, and is normally either a flat or profiled decorative molding which covers the inside edges of the wall jambs and rough opening between the window unit and the wall. |
| CFM/Air Infiltration |
A rating of how much air a window will leak with a specified amount of wind per hour applied to the exterior of the window. A lower CFM/Air Infiltration number is a better performing window. |
| Continuous Keeper |
A continuous locking groove across meeting rail: Pennco's cam lock locks into the locking groove, i.e., continuous keeper. |
| CRF/Condensation Resistance Factor |
A CRF rating number for a window tested by an independent certified test lavatory that measures the outside temperature; the indoor temperature and relative humidity; and the temperature the inside window surface must become to have visible condensation. |
| Daylight Opening |
The width and the height of the visible glass. |
| DP Ratings |
A rating requirement of DP-47 is required for many areas such as coastal areas. The higher the design pressure, the better the product is perceived to be. Example: Pennco 2180 3050 = DP-50. |
| Direct glazed |
Glass glazed directly into the sash or frame of the window. |
| Double hung window |
A window which sash, top and bottom, operates vertically, up and down. Both sashes are held in the open position with use of block and tackle balances. An optional full screen is available. |
| Egress Size Window |
The national building code require each sleeping room to have a least one escape or rescue door or window. An egress window must have a minimum net clear opening area of 5.7 sq. ft. - a minimum net clear opening height of 24" - a minimum net clear openable width dimension of 20" - and a sill height not more than 44" above the floor. All Pennco 3050 windows meet egress. An egress door must have a minimum clear opening width of 32." Exterior thresholds and sliding tracks must not exceed 3/4" in height. Thresholds and changes in level at these locations must be beveled with a slope no greater than 1:2. |
| Energy Star |
Energy Star products can help reduce energy bills up to 15%. They also increase comfort, reduce noise in the home, and protect against UV rays that cause sun damage to carpet, wood flooring and furniture. Pennco windows that meet Energy Star are a soft-coat Low-E option and must be specified on the order. |
| Extension jambs |
Flat wood parts which are available factory or field applied to the interior of the window. The inside edge of the extension jambs should be flush with the finished wall surface so that the inside casing can be nailed to it. |
| Extrusion |
An article or product of vinyl or metal made by the process of extruding. This includes window parts such as; frames, glazing stop, balance covers, mulls, mull covers, etc. |
| Feature windows |
A variety of 3/4" i.g. fixed light styles; normally considered upgrade design feature shapes; i.e., quarter circles, half circles, full circles, eyebrows, extended leg half circles, extended leg eyebrows, octagons, polygons, transoms, etc. |
| Flashing |
A metal or plastic strip, or special flashing tape, attached to or around the outside of the window frame to provide a weather barrier, preventing leakage between the frame and the wall. |
| Frame |
The outside member of a window unit which surrounds the sash and/or glass. |
| Glass, I.G. |
Two sheets of glass bonded together in a unit to enclose a captive air space. The units have a i.g. glass separating spacer which has a desiccant; the desiccant is sealed between the i.g. glass inside the spacer and will absorb and hold moisture trapped in the air space. All Pennco window i.g. glass is 3/4" thick. |
| Glass size |
The actual net size width and height of the i.g. glass in the sash or window frame. |
| Glass setting blocks |
Soft rubber spacers used to shim between the i.g. glass and window frame. |
| I.G. Tru-Seal glass spacer |
Aluminum rolled form spacer to divide two pieces of glass to make it i.g. The date window/glass was manufactured (Pennco code-date) is on the aluminum spacer. |
| Glazing |
The i.g. glass panes or lites installed in the sash or frame of a window. The i.g. glass is back-bedded with a special glazing material. |
| Grilles (GBG) |
Ornamental bars or cross-bars which appear to divide the lights of glass. Generally made of aluminum or of a high-end plastic type material that installed by the manufacture in the inside of the i.g. glass. They are called, "GBG", i.e., grilles between the glass. |
| House Wrap |
A weather resistant barrier (WRB) house wrap, supplied by others. Pennco recommends following the "House Wrap" manufacturers installation instructions to seal the wrap around windows/doors. |
| Installation of windows / doors |
Always review and follow the manufacturers' factory installation instructions. Generally, installation instructions are located on the window sticker of each window and door. |
| Interlock |
Extruded in top rail of rail of bottom sash, and inside meeting rail; allows full interlock of sash at meeting rails. |
| Jambs |
Side jambs are vertical members of the window frame, and a head jamb is the horizontal member across the top. |
| Low-E glass |
Low-E stands for "low emissivity." Low-E is a film or metallic coating on the glass that reduces radiant heat transfer through the glass. The lower the emissivity the lower the heat allowed to be radiated and the higher the reflector (re-radiation). |
| Meeting Rail |
A horizontal hollow (steel reinforced) extrusion in a single hung; screw fastened, water tight sealed and mortised into the side frames of the window. |
| Mull bar |
An aluminum extrusion used to attach two or more windows together, vertical or horizontally. |
| Mull cap (or cover) |
The exterior or interior vinyl extruded part used to cover the mull bar. |
| Mull brackets |
An angled bracket that hooks on and screws into a mulled window frame at the top and bottom of the window. The mull bracket also flashes and helps seal the outside corners of the window frame to the mull. |
| Nailing flange |
A vinyl-extruded integral part of the window frame which is used for installing the window by nailing through the elongated pre-punched holes in the flange. |
| NFRC |
National Fenestration Rating council (NFRC) = An accurate way to compare energy efficiency for the consumer. |
| OX or XO |
The letters OX and XO identify the directional operation of a door unit. The letter O stands for the stationary panel and the X stands for the operating panel - viewed from the outside (example, an XO door would slide from left to right). |
| Picture window |
A stationary non-operating, non-ventilating window; designed for maximum view. Often used as a stand-alone window or a window mulled either horizontally or vertically to other window units. |
| Pivot block |
An operative part located in the jamb of the window frame; the block and tackle balance hooks on to the pivot block; a rotating cam rotates when the sash is tilted to be cleaned or removed. |
| Rails |
The horizontal top and bottom members of a window sash or door panel. |
| Replacement windows |
(For standard double hung wood sizes, with frames in good condition) Pennco series 2020 single hung replacement windows may be sized to fit standard wood window sizes. The old wood window sash and jamb liners are removed; vinyl window w/ 1" sill flange to fit 14 degree sloped wood window sill is installed from inside. |
| RMR (Removable Meeting Rail - Single Hung) |
Sheetrock (pass-through) window. |
| Rolled form aluminum |
A term used to describe aluminum profiles which are fabricated by the use of a roller or series of roller to produce a desired profile. Screen frames are usually made from rolled formed aluminum. |
| Round top |
Generally a semicircle window which is mulled to the top of another window thus forming the round top appearance. Sometimes round top windows are used as stand-alone units and are not mulled over a window. |
| Safety Glass Standards |
Safety glass is required in any window adjacent to a door where the nearest vertical edge is within 24" of the door and/or the bottom edge is less than 60" above the floor.
Safety glass is required in panes larger than 9 sq. ft. where the bottom edge is less than 18" above the floor and waking a surface is within 36" horizontally of the window or either side. |
| Sash |
The operating portion of the window unit that is separated from the frame and holds the glass in the unit. The sash consists of two parts; 1) stile: Vertical sash members; 2) Horizontal sash members. |
| Sash tilt latch |
A spring-loaded sash release part mounted on the top rail of the sash used to remove the window sash from the window frame. Each sash has a right - and - left hand tilt latch. |
| Sash tilt pin (tilt-block) |
Each double hung or single hung sash has two rectangular shaped tilt pins which are screw-fasten to the sash; the tilt pins are positioned at the corner edges of the sash and rotate with the cam in the pivot block when the sash is tilted. |
| Screen retainer |
Two 3" vinyl extruded part snaps into exterior part of the sill frame to retain the screen in a single hung or double hung windows. |
| Pennco series of windows available |
Single hung; 2020 - wide flat exterior profile frame; 2070 - high profile frame; 2180 - Brickmould frame with siding pocket; Double hungs: 2222 - high profile frame; 2280 - heavy Brickmould frame with siding pocket. |
| Shim |
A wedge or strip of wood, supplied by others, used to level a window or door in the opening. |
| Sill |
The horizontal member forming the bottom of a window or exterior door frame; the lowest member of the frame of a structure, resting on the foundation and supporting the jamb-frame. |
| Sill Cover |
A snap-in removable extruded part to cover the window sill; helps protect the main-frame window sill from being damaged. |
| Slider Windows |
2020, 2070 or 2180 series - horizontal sliding window. |
| Support Post |
Located under the balance cover; screwed into the frame to support the balance in a window. |
| Tempered glass |
Glass which has been heat treated and designed to disintegrate when cracked or broken. |
| Thermal Ratings |
Windows can be rated and certified to meet certain U-values, R-values, etc. Using Low-E glass will improve the thermal rating values. |
| T-Lug |
An integral part of the inside and outside of the window frame that received the mull bar and extension jamb clips. |
| T-Lug Cover |
A U-shape extrusion to slide on and cover a broken T-lug. |
| Transom Window |
A fixed-light non-ventilating window; most often used as a stacking mulled unit over a window. May also be used as a stand-alone window unit. |
| U-Value |
A measure of total heat flow through the heat barrier from the room air to the outside air. Lower numbers indicate greater insulating capabilities. |
| Uni-Frame Mull |
A Uni-frame mull is a continuous head and sill window system designed for all Pennco single hung windows (twins and triples only). Available as an option to the standard mull bar. |
| Weather-stripping |
A strip of resilient material designed to seal the sash and frame members in order to reduce air and water infiltration. |
| Weep baffles |
A weeps water system in the exterior of the window sill; complete with a wind baffle to prevent air infiltration. |
| Window size |
The actual interior dimensions, width and height, of the window frame that goes into the rough opening of the wall. |
| Rough opening |
The roughed-in opening in the wall where the unit is to be installed. Rough openings are recommended to be 1/2" larger than the unit size to allow room for insulation and to square the window unit when installing. |
| xx |
xx |
