Editing Window blind (section)

==Types==
===Panel===
Panel blinds, sometimes referred to as Japanese blinds as they are based on Japanese [[shōji]], are thin blinds in a panel shape that run along a track. Almost any fabric or paper can be employed, although 90% of all shoji blinds use white polyester to imitate '[[washi]]' Japanese paper.{{clarify|date=February 2020}}
[[File:Japanese Shoji Blinds.jpg|thumb|Japanese shoji blinds in Nottingham, UK]]

===Cellular shades===
[[File:Honeycomb or cellular window shades.jpg|thumb|Cellular shades, also called honeycomb shades, hanging in a window]]
Cellular shades or cellular blinds, sometimes referred to as honeycomb shades, are a type of window blind made of a long and continuous fabric with a cellular structure when opened and fold onto themselves when closed. The honeycomb shades were introduced in 1985.{{sfn | Madill |1995 | p=24}} The fabric is often made from soft paper or cloth-like material and is available in a variety of different structures including single cell, double cell or triple cell. Cellular blinds work by trapping air inside the cell structure once opened and create a barrier between the window surface and the room. Due to the unavailability of standardized tests, no ranking system currently exists to compare the efficacy of these blinds.

Windows and doors make up for almost one-third of a home's total thermal loss, according to the [[Department of Energy (United Kingdom)]].<ref>{{cite web| url=https://www.energy.gov/energysaver/update-or-replace-windows
|title=Update or replace windows |website=energy.gov |accessdate=9 December 2021}}</ref> This applies to heat loss in winter as well as entry of undesired heat in summer. When air inside the room comes in contact with windows, it is cooled or warmed. By [[convection]], this air then circulates around the room. Cell shapes in the blinds hold trapped air and create a barrier between the window surface and the room, thus lessening the transfer of heat. Shades, however, provide only slight control of air infiltration.<ref>{{cite web|url=https://www.energy.gov/energysaver/energy-efficient-window-coverings|title=Energy Efficient Window Coverings| accessdate=9 December 2021}}</ref>

In common with all blinds, cellular shades can reduce [[solar gain]] in summer and provide room darkening or blackout for sleeping. Like most other window treatments, they are raised and lowered with a string. Cordless cellular shades are available to reduce the risk of strangulation for small children.<ref>[https://www.cpsc.gov/PageFiles/129594/5009a.pdf Safety Alert: Are Your Window Coverings Safe?], U.S. Consumer Product Safety Commission (retrieved 15 April 2015)</ref> One may also have the option of lowering the top of the shade down, and/or the bottom of the shade up; commonly referred to as a Top-Down-Bottom-Up mechanism.

===Roman===
Roman shades are a type of window blind used to help block out the sun. Although often called blinds, these are actually referred to as "shades" in the window covering industry. They are often referred to as Romans or Roman blinds in the [[UK]]. When opened, the Romans stack up evenly; when covering the full window height, they are smooth without overlapping.

Roman blinds can be purchased with a [[Blackout (fabric)|blackout]] lining on the back to fully block out sunlight. However, there will always be small light gaps on the edges of the blinds if mounted on the inside of the window frame or peeking out from behind the blind if mounted on the frame around the window.

Unlike other blinds, such as certain fabrics used for roller shades, vinyl vertical blinds, or vinyl horizontal blinds, Roman shades are not an ideal option for areas with a lot of moisture, such as bathrooms or windows above a kitchen sink.
[[File:Interior of Independence Hall, Philadelphia, Pennsylvania - July 2009 - Sarah Stierch.jpg|thumb|[[Independence Hall]]]]

===Roller===
Roller blinds are a type of window blind that is typically made from a [[polyester]] fabric wrapped around a plastic or metal roller. The roller may either be exposed or enclosed inside of a frame and can be placed at the top of the window recess or outside of the recess. To control the roller blind there is typically a chain or string on either side of the blind. When the side chain is pulled one direction the roller will raise, and if pulled in the opposite direction it will lower instead.

Some manufacturers also produce a version of roller blinds with two layers of fabric, sometimes referred to as double roller blinds, for even greater control of light filtration through a window. Typically, one layer will be made of a [[sheer fabric]] that can be used to reduce glare, with a second layer that typically includes a blackout lining for even greater filtration when necessary.

===Venetian===
[[File:Venetian blind co., tag cropped.jpg|thumb|Venetian Blind Co. brass tag]]
[[File:L-Jalousie.png|thumb|''Venetian blinds'' diagram]]
[[File:Historic American Buildings Survey, Ned Goode, Photographer September, 1959 WINDOW WITH EARLY VENETIAN BLINDS FIRST FLOOR EAST ROOM. - Hamilton-Hoffman House, Coggs Creek HABS PA,51-PHILA,252-6.tif|thumb|Venetian blinds on window]]
[[File:Picturesque Burlington - a handbook of Burlington, Vermont, and Lake Champlain (1894) (14749552556).jpg|thumb|Venetian Blind Co.]]
A Venetian blind is a type of window blind made from overlapping horizontal slats that are typically lowered and drawn together by pulling a cord.<ref>{{cite web | url=https://www.dictionary.com/browse/venetian-blind | title=Venetian blind Definition & Meaning | website=dictionary.com | accessdate=11 December 2021}}</ref> The slats are typically manufactured using a rigid material such as aluminium, plastic, or wood and move in unison through a series of wires that run through the blinds.

[[File:Blinds patent John Hampson of New Orleans 1841 diagram.png|thumb|1841 for modern style blinds able to be held at angles and adjustable by cords]]

In the late 19th and early 20th centuries, Venetian blinds were widely adopted in office buildings to regulate light and air. A large modern complex in the [[US]] that adopted Venetian blinds was Rockefeller Center's [[RCA Building]] (better known as the Radio City building) in [[New York City]], completed in the 1930s. One of the largest orders for Venetian blinds ever placed was to the Burlington Venetian Blind Co., of [[Burlington, Vermont]], which supplied blinds for the windows of the [[Empire State Building]] in New York City.<ref>"—and in the Empire State Building", an advertisement for Burlington Venetian Blind Co., in ''American Architect and Architecture'', January 1932, p. 93.</ref><ref>{{cite web | url=https://www.uvm.edu/~hp206/2013/pages/hovanes/index.html | title=Manufacturing in the Maple-Kilburn Area of Burlington, Vermont | website=uvm.edu | accessdate=11 December 2021}}</ref>
In 1994, a design for Venetian blinds integrated with window glass panels was patented.<ref>{{cite patent|number=0589496|country=EP|pubdate=1994-03-30|title=Double-glazed windows with venetian blinds|assign1=BERTI Srl|inventor1-last=Berti|inventor1-first=Bruno}}</ref> This new type of blind overcomes the problems related to damaging and fouling. Usually, magnets are used for motor transmission in order to preserve the sealing inside the insulating glass.{{citation needed |date=December 2021}}

===Vertical===
[[File:Vertical blinds at noon.jpg|thumb|Vertical blinds, vanes are rotated to semi-closed position]]
Vertical blinds were introduced in 1948 (Flexible Blind Company, [[Hunter Douglas]]{{sfn | Abercrombie | 1995 | p=250}}), and gained acceptance as an alternative to [[draperies]] due to the streamlined look, versatility, energy efficiency, large variety of finishes.{{sfn | Madill |1995 | p=38}} The construction includes a horizontal (occasionally, in custom designs, tilted) ''track'' with moving ''carriers'' and vertical strips, called ''vanes'', hanging off the carriers{{sfn | Madill |1995 | p=39}} (attached by ''clips''). The vanes can rotate, changing the amount of light entering the room, and, when in open position, traverse the track (and thus be stacked compactly on one side of the window). When closed, the vanes tightly overlap, creating a good barrier against the sunlight penetration in summer and energy loss in winter.{{sfn | Madill |1995 | p=38}}

Unlike horizontal blinds, vertical blinds are less likely to collect dust because they stand vertically. Since they draw to the side rather than lifting and lowering, they are easier and faster to operate. They operate best on patio doors and sliding windows that slide from side to side. In the 1970s there were few choices of fabric- usually beige or white, which had to have stiffener embedded to prevent fraying, rather like on roller blinds fabric but using a thicker textile.

Vertical blinds became available in flat plastic (PVC), fabric, embossed PVC, also S-curved slats. A more modern modification is to offer them with wood trim at the top and bottom—sometimes midway as well—and these are usually described as "Japanese Vertical blinds" because they are often coordinated with Japanese style Shoji blinds using the same timber. Vertical blinds were most popular in the UK during the 1990s, since then sales have slowed as they lost popularity with a younger generation.

Stationary vertical blinds are hung in the doorways of some homes and businesses which generally leave the door open. Movement of the blind may signal a change in airflow, or someone entering the doorway. More commonly, however, these vertical blinds are made of thick plastic. In the cold rooms of food businesses, this slows the heat leakage into the cold room. In warmer climates, vertical blinds discourage flies and some other insects from entering the building.
In certain areas of the UK window blinds are used to disguise the fact that offices have PCs in them and are used as a burglary deterrent.

===Others===
[[File:Plissee VS 3 Cosiflor Meiwi-Jalousien 2.JPG|thumb|left|upright|Pleated blind]]
Other varieties of window blinds include [[mini blind]]s (typically aluminum, Venetian-Style blinds with very narrow slats, usually {{convert|1|in|mm|abbr=in|order=flip|disp=or}} wide), micro blinds (usually {{convert|1/2|in|mm|abbr=in|order=flip|disp=or}} wide), [[louver]]s, [[jalousie]]s, [[brise soleil]] and [[pleated blinds]].