Glossary


A
Acrylic Glazing
Acrylic is a thermoplastic with good scratch resistance, shatter resistance, and color stability.

Adjustable Vinyl Sill Expander or Aluminum Sill Angle
Compensates for out-of-square openings.

Majesty Custom Clad Replacement double hung and picture windows utilize a similar sill expander pictured below but made of aluminum. Majesty casement and awning replacement windows use an aluminum sill angle shown below.

Adjustable Vinyl Sill Expander


Aluminum Sill Angle


Air Infiltration
Air Infiltration is the amount of air leaking in and out of a home or building through cracks in walls, windows and doors. The rate of air infiltration is measured around a window or skylight in the presence of a specific pressure difference. It is expressed in units of cubic feet per minute per square foot of window area (cfm/sq. ft.). The lower a window's air infiltration rating, the better its airtightness.

Aluminum Roofs
If you want a roof with the beauty and protection of copper but keeps its color, our Aluminum Roof System is the answer. The aluminum roof is finished in solid aluminum and is available in four colors: Coppertone, Patina, Bronze, and White.

Argon Gas
Argon is a colorless, odorless, non-toxic, non-corrosive, non-flammable dense gas which hinders heat transfer. In the PPG Intercept® Warm Edge Glazing process, the air between the two panes of glass is replaced by Argon Gas to increase energy efficiency even further. Heat energy is naturally inclined to move towards cooler areas; however, the density of Argon prohibits the heat from easily penetrating it, so it's forced to remain where it is.

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B
Beveled Glass
Beveled grid configuration etched into the glass.

Block & Tackle Balance System
Used in single hung and double hung windows as a means of counter-balancing the weight of the sash during opening and closing. Harvey's Block & Tackle Balance System:
  • Is individually pre-calibrated on each Harvey window for:
    • Easy fingertip operation.
    • Adjustment-free sash.
  • Features a compound nylon cord (used on parachutes and lobster traps) for a dependable and durable operating system.
  • Is warranted for the life of the window.
  • Compare Harvey's Block & Tackle Balance with others.
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C
Cable Support System
Harvey Bay and Bow Windows must have adequate structural support to ensure a stable installation. For this reason, a cable support system along with detailed instructions is supplied with each unit. Harvey strongly recommends the use of this cable system with every Bay and Bow installation.

Clad
A layer of aluminum bonded or sheathed to the exterior of a wood window to achieve a maintenance free product.

Compact Folding Handle
Our folding handle eliminates interference with blinds and other window treatments. It is available in White, Almond, or Bronze for Harvey vinyl casement windows and Coppertone for Harvey Majesty casement windows. Since they are compatible with all Harvey casements that are currently in the field, they may be purchased separately.



Condensation
Condensation comes from the moisture in the air, and is caused by too much moisture in the air for a certain temperature. Condensation forms when warm, moist air touches a surface that is colder than the dew point of the warm air. As that air becomes colder and its temperature drops below its dew point, it must release excess moisture to reach its new, lower dew point. It releases moisture in the form of water, which appears on the colder surface. For more information on Condensation, read our Condensation Causes & Cures

Copper Roofs

Copper roofs are finished in 16 oz. copper and supplied as one-piece units ready for installation. They will season to a soft green patina adding a classic touch of beauty and a lifetime of protection to any home.

Custom Roof Systems
Complement any bay or bow window with a Harvey Custom Roof System. Structural, Copper, or Aluminum Roof Styles are fully framed and sheathed in 1/2" plywood. Harvey Custom Roof Systems are compatible with our own Vinyl Replacement Bay and Bow Windows, Vinyl New Construction Double Hung Bay Windows, and Majesty Wood Double Hung Bay Windows.

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D
DSB Glazing
DSB is Double Strength Glass of 1/8" thickness.

Decorative Pencil Bar Grids
Anodized brasstone or brushed nickel Designer Muntin Bars (GBG - Grids Between the Glass only).

Designer Window Shapes
Specialty vinyl/wood shapes including octagons, triangles and roundtops that enhance and customize standard shape windows.

Designer Pressure (DP)
The wind load pressure a product is rated to withstand.

Double Low-E/Argon Glazing
This glazing system utilizes Low-E (low-emittance) coating on both pieces of glass within the sash. Argon gas is then injected between the double-paned glass making it even more difficult for heat or cold to pass through. All Harvey vinyl double hung windows exceed ENERGY STAR qualifications throughout the U.S. when Double Low-E/Argon is used.

Double Low-E/Krypton Glazing
This top-of-the-line glazing system is part of our High Performance Package in our premium Tribute window. It utilizes Low-E (low-emittance) coating on two pieces of glass within the sash. Krypton gas is then injected between the glass making it even more difficult for heat or cold to pass through. Outstanding energy efficiency is achieved when Double Low-E/Krypton is used.

Dryer Vent Hole
For Hopper window units only. Consists of two sheets of acrylic, sealed with butyl with an overall thickness of 7/8". A 4" or 4 1/2" diameter hole will be cut through the acrylic to allow standard dryer vent pipes to pass through. NOTE: Harvey offers no glazing warranties on dryer vent units.

Dual Point Locking System with Keylock
Dual point is a 2-point locking system with a keylock cylinder.

Dupont Delrin® Acetal Resin Wheels
Rolling Storm sash roll on self-lubricating wheels for smooth operation and are easily removed from the inside for cleaning or repair.

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E
ENERGY STAR®
Program sponsored by the US Government's Department of Energy (DOE) and the Environmental Protection Agency (EPA). ENERGY STAR rated products save energy by meeting strict guidelines set by the DOE and the EPA. Harvey vinyl windows are ENERGY STAR qualified when glazed with Low-E/Argon Gas. More information »

Equal Height Sash
Equal height sash results in slim meeting rail appearance.

Exterior Grid Package
The Exterior Grid Package combines a permanently fastened exterior grid with a contoured GBG to give the more authentic appearance of individual panes of glass. This is a great option when historical guidelines need to be followed. Available in 5/8" or 1" profile.

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F
Flush Mount Deadbolt
Flush mount deadbolt is a thumb bolt that is applied to the interlock. When engaged, it goes up through the header of a solid vinyl patio door.

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G
Glazing Options
(Note: Not all glazing options are available with every window. Please check Product Detailed Information for Glazing Options.)
GBG (Grids Between the Glass)
Colonial and Diamond Style Grids are available between the glass. The colonial style features a contoured profile; the diamond style, a flat profile. Both are available in white, almond, and bronze (dark bronze for Majesty) to match window lines that are available in those colors. In addition, our brasstone and brushed nickel Decorative Pencil Bar grids are available between the glass.
Special Order Styles are also available in a contoured profile in white, almond, and bronze (dark bronze for Majesty). Decorative Pencil Bar grids are also available in special order styles as well. Design your own grid pattern...the possibilities are endless!

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H
Heavy Duty Silicone-Treated Wool Pile
Heavy duty silicone-treated wool pile in sash insulates and prevents rattles.

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I
Insulated Glass
Two pieces of glass spaced apart (with intercept spacer) and hermetically sealed to form a single glazed unit with an air space between.

Intercept® Warm Edge Glazing by PPG
Intercept® is a unique, seamless steel coated U channel system, developed by PPG Industries, which is located at the point of contact where the glass is sealed to the window frame. The U-channel spacer bar is manufactured as one continuous piece thus providing excellent structural integrity and superior thermal performance in all Harvey windows. In addition, PPG Intercept® "warm edge" technology provides 10% warmer indoor glass edge temperatures, provides for outstanding argon gas retention, a higher "R" value, and excellent condensation resistance.

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K
Krypton
An inert colorless, nontoxic gas used in insulating windows to reduce heat transfer. Similar to Argon gas, Krypton gas is much heavier than air, making it more difficult for warm or cold air to pass through.

L
Laminated Glass
Two or more sheets with an inner layer of transparent plastic to which the glass adheres if broken. Used for safety glazing and sound reduction.

Lexan Glazing
Lexan is a polycarbonate with a high range of impact resistance.

Low-E/Argon Glazing
This exclusive warm edge technology combines PPG Intercept® Warm Edge Spacer System, Low-E Glass, and Argon Gas for superior thermal efficiency, high R-values (low U-factors), and improved seal longevity. All Harvey vinyl double hung windows are ENERGY STAR qualified throughout the U.S. when Low-E/Argon is used.

Low-E Glazing
Low-emittance (Low-E) refers to the window's ability to diminish heat loss, thus saving heating and cooling costs. In addition to energy savings, Low-E also effectively reduces the amount of transmitted ultraviolet light which can damage carpets, fabrics, and drapes. Harvey uses Solarban® 60 Low-E Glass from PPG Industries, ideal for any climate throughout the U.S.


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M
Marine Vinyl Glazing
A glazing system which begins by wrapping the full perimeter of the glass unit with a soft vinyl channel which serves to cushion the glass as well as to provide positive protection from water.

Multi-Point Locking System
Multi-point lock is a locking system that utilizes 4 locking "claws" that engages simply by turning the knob.

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N
NFRC
The National Fenestration Ratings Council is the only organization that the EPA and DOE will accept test ratings from. All Harvey Windows and Doors are NFRC certified.

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O
Obscure Glazing
Obscure glass is a "frosted" glass used for privacy, light diffusion, or decorative effects.

Oriel Windows
Oriel windows have sash of unequal heights. All storm windows can be made with either the top or bottom sash taller. However, it is important to note that you may not be able to tilt in and remove the sash from inside the house. The screen will always be the size of the sash with the shortest height. Oriel windows are measured from the top, down to the bottom of the prime window meeting rail.

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P
PPG Industries
PPG Industries has been the industry leader in the development of high-performance glass coatings since the introduction of the first coated glass for commercial applications more than three decades ago. Harvey uses PPG's top of the line Low-E Glazing. This glazing is a virtually transparent coating factory-applied to the inside glass panel and is ideal for any climate throughout the U.S.

PPG Intercept® Warm Edge Glazing
Intercept® is a unique, seamless steel coated U channel system, developed by PPG Industries, which is located at the point of contact where the glass is sealed to the window frame. The U-channel spacer bar is manufactured as one continuous piece thus providing excellent structural integrity and superior thermal performance in all Harvey windows. In addition, PPG Intercept® "warm edge" technology provides 10% warmer indoor glass edge temperatures, provides for outstanding argon gas retention, a higher R-value, and excellent condensation resistance.

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R
Rain Shed Header
Overlaps sash to effect a positive weather seal.

Rigid-bar Meeting Rail
A fine feature that makes the Tru-Channel Storm Window outperform other windows is the revolutionary rigid bar tubular extrusion with double weather stripping. It really puts a stop to leaking air and keeps the frame square even after years of service.

R-Value
R-Value measures the resistance of a glazing material or fenestration assembly to heat flow. A high R-Value window has a greater resistance to heat flow and a higher insulating value than one with a low R-Value.

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S
Sash Interlock
Sash interlock provides a positive tight seal where top and bottom sash come together.

SDL (Simulated Divided Lites)

Colonial style grids that are applied to the exterior glass lite and used in combination with GBG to simulate individual glass lites.

Seacoast Hardware Package
A Stainless steel wheel package that is for coastal applications, corrosion-free hardware

SHGC
Solar Heat Gain Coefficient (SHGC) measures how well a product blocks heat from the sun. SHGC is expressed as a number between 0 and 1. The lower the SHGC, the better a product is at blocking unwanted heat gain. Blocking solar heat gain is particularly important during the summer cooling season.

Snap-In Wood Grids
Colonial style Pine or Oak grids fastened to the interior glass lite (Majesty only). They are designed to be removable for easier cleaning of glass.

Spectral Rating
The minimum level of design pressure (air, water, wind) to which a representative test specimen is tested to achieve a particular rating.

Spiral Balance
Used in many inferior windows, this type of balance requires periodic adjustment and lubrication and can become more difficult to operate over time. We strongly recommend purchasing a window with a block and tackle balance system for a lifetime of smooth operation. Compare a spiral balance with Harvey's Block & Tackle Balance.

Spring Loaded Sash Locks
These locks are adjustable up or down and automatically clamp onto the master frame when sash are closed for cleaning or repair.

SSB Glazing
Single Strength Glass of 3/32" thickness.

Stainless Steel Wire Mesh Screen (Black Powder Coated)

Designed to be a permanent fixture, the heavy-duty stainless steel screen is installed as a preassembled unit. A 90 degree bend along the screen's edges locks it firmly into the door frame. (Glass inserts may be added or removed, but the screen always remains fixed.) Stainless steel 300 series wire mesh offers the best corrosion resistance available. Mesh is double-crimped and formed of .028" diameter wires - 10 openings per inch - each opening approximately 1/16".

STC Rating
STC (Sound Transmission Class) is a measure of sound reduction in accordance with ASTM Classification E 314. The higher the STC value, the better the product is at keeping sound out.

Structural Rating
The minimum level of design pressure (air, water, wind) to which a representative test specimen is tested to achieve a particular rating.

Structural Roofs
A roof system that is fully framed and sheathed in plywood to accept underlayment and shingles for finishing.

Structural Test Pressure
The pressure differential applied to a window or door system and is 150% of design pressure.

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T
Tandem Locking System
When the sash is latched in a Majesty casement window, a triggering mechanism automatically engages all bolts into the jamb. Likewise, the bolts are automatically retracted as soon as the latch is disengaged.

Tempered Glazing
Tempered glass is treated glass that has been strengthened so that when shattered, it breaks into small pieces. It is required as safety glazing in patio doors, entrance doors, side lights, and other hazardous locations.

Triple Glazing
Triple glazing incorporates three panes of glass sealed with the Warm-Edge Intercept glass spacer system for added performance and durability. Two panes of glass utilize Low-E coating, and both airspaces contain an inert gas for superior energy efficiency.

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U
U-Factor
U-factor measures how well a product prevents heat from escaping a home or building. U-factor ratings generally fall between 0.20 and 1.20. The lower the U-factor, the better a product is at keeping heat in. U-factor is particularly important during the winter heating season.

Unit Size
Unit size refers to the size of the window or door.

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V
Vertical Stabilizer Bar
Used in exterior rolling storm windows, this stabilizer bar at the frame center provides a rigid interlock for the sash.

Visible Light Transmittance
Visible Transmittance (VT) measures how much light comes through a product. VT is expressed as a number between 0 and 1. The higher the VT, the higher the potential for daylighting.

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W
Water Resistance Test Pressure
The amount of pressure a window or door is able to withstand without water penetration and is 15% of design pressure.

Welded Sash
Our welded sash design is heat sealed at 400 degrees for a permanent bond which provides years of trouble-free performance. The welded sash has been designed with an exterior glazing bead which offers a seamless interior finish. Manufactured in our factory with fully automated equipment, you're assured a product consistent and true to exacting standards every time.

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