In addition to aiming, Fresnel lenses, and louvers, visors and back panels are also useful in areas where sunlight would diminish the contrast and visibility of a signal face.

The 1971 Riviera also features GM's " Full-Flo " ventilation system and two large deck lid louvers are prominent on the trunk lid.

The side window louvers are functional, part of the flow-through ventilation system.

There are also two air-inlet louvers in the forward of the engine compartment's roof and four smaller air-inlet louvers to the rear.

In general use, any louvers in a bell tower are commonly called abat-sons, whether they are designed to redirect sound or merely to prevent ingress of water.

Modern louvers are often made of aluminum, metal, wood, or glass.

In industrial facilities such as Steel Foundries and Power Plants, louvers are very common.

The louvers are locked together onto a track, so that they may be tilted open and shut in unison, to control airflow through the window.

The fixed window panels with louvers should have a good grade of 1/8-inch double-strength glass set in a mastic glazing compound.

The coupe was an SE model with body work such as hood louvers and extra body cladding ( which will be the most controversial design element in the years to come ).

The top-of-the-line XR-7 continued as a separate model, with unusual simulated louvers applied in front of its opera windows and a new rear style that was meant to evoke the larger Lincoln Mark coupe.

This model included power brakes and steering, 15-inch wheels, rear stabilizer bar, walnut woodtone instrument panel, " XR-7 " trunk key-hole door, " COUGAR " decklid script, large hood ornament, and sport-styled roofline with back-half vinyl and rear opera side windows and louvers.

Other variety of window blinds include mini blinds ( Venetian blinds with very narrow slats 1 " ( usually 25 mm wide ), micro blinds 1 / 2 " ( usually 12 mm wide ), louvers, jalousies, brise soleil, Holland blinds, pleated blinds, Roman shades, and roller shades.

-- Black highlights on front, side and rear of body headlight openings, parking light openings, windshield, rear window and side window moldings, body sill, door and center pillar louvers, rear end panel-( bright window moldings with black exterior ), Black or gold rear accents ( taillight blackouts and rear end panel decals ), Body color front air dam and rear spoiler, Spyder emblems ( front facia, rear lock cover and sport steering wheel horn button insert ), Body side stripes with Spyder lettering in red, white or gold depending on body color, Black painted styled-steel wheels with trim rings and center caps, Black sport mirrors, Special hood decal and rear spoiler decal.

-- BR70-13C steel-belted radial ply blackwall tires ( with option for raised white lettering ), Sport suspension, Black front and rear bumper rub strips, Black headlights frames, Black windshield, belt, side and rear window moldings ( not available with black exterior ), Black painted body sill ( also not available with black exterior ), Black door and center pillar louvers, Black painted taillight frames, Body color front air dam and rear spoiler, Spyder emblems on front facia, rear lock cover and sport steering wheel ( horn button insert ), Black sport mirrors ( LH remote, RH manual ), Rear Spoiler and body stripes with Spyder lettering outlined in accent body colour, Spyder hood decal, Black painted Rally II wheels with bright trim rings and center caps.

The hood from the 1974 Hurst / Olds, with the center mounted louvers, carried over.

The exterior featured a blacked out grille, headlight bezels, rear window molding, door and quarter window frames, rear license plate depression, and wiper arms, a black front air dam, black front and rear fender flares, dual flat black rear-view mirrors, black rear window louvers, black body side scuff moldings, silver " targa " roof band, contrasting " AMX " decals ahead of the rear wheels, silver slot-styled steel wheels, and body painted bumpers with black rubber guards and scuff moldings.

Rear fenders held a chrome bead running along the top, while massive chrome spears with hash marks replaced the 1955 ’ s delicate chrome louvers on the rear sides.

Later they evolved into more elaborate designs made of pottery, taking the shape of faces where the smoke and steam from cooking would pour out through the eyes and mouth, or into constructions that were more like modern louvers, with slats that could be opened or closed by pulling on a string.

Three different carbody variants were produced, and were differentiated as follows: Phase 1a units had their air intake louvers located in a continuous line along the top of the long hood, and a wide separating strip between the radiator fans ; Phase 1b modifications were minor, consisting only of a " dip " in the long hood handrails that allowed them to better follow the profile of the side walkways ; Phase 2 units boasted fewer air intake louvers, with large gaps separating them ( the radiators themselves were divided by only a tiny metal strip ).

These were dressed-up Scout models with special exterior decals and trim, center console coolers, hood scoops, and some editions had plastic window louvers on the rear side glass, fender flares, and two different plastic tailgate inserts.

Heather & Little furnished the structure with a new copper steeple, copper cornice and dentil bands, belfry louvers, ornaments, and the stunning 20-oz copper ceiling of the spire.

The louvers were moved to the door jambs for 1972-1976 models.

The package includes a front air dam, rear spoiler, appliance wire mag rims, window louvers, a chrome exhaust tip, and bright stripe decals for the hood, body sides, rear spoiler, door handles, and wheel centers.

The roof-mounted decorative chrome louvers and individually framed side door glass ( a Sixty Special design element since 1938 ) were carried over to this latest model as well.

1962's styling remained similar to 1961, and Sixty Special's fender louvers were moved up to the roof, directly behind the rear door opening.

( Unfortunately, under certain conditions a vacuum was created that sucked rain and exhaust back into the car and the " Full-Flo " ventilation was redesigned and the louvers were removed from trunk lid for the 1972 model year.

Trunk mounted louvers for the flow through ventilation system were only found on 1971 models ( as in many other GM models of 1971 ).

On the interior, the building uses thermal chimneys and louvers that admit diffuse light to limit the need for artificial light and thermal control.

Full preparation for water operations consisted of the addition of a snorkel tube, the installation of blanking plates, carried on the front of the hull, over the engine compartment's air intake louvers, and the installment of infra-red driving equipment, including a searchlight.

The exterior included a front spoiler integrated into the front lower fender extensions, rear lower fender flares, sport-styled road wheels, brushed aluminum " Targa top " band over the B-pillars and roof, black left and right outside mirrors, and louvers for the rear hatch window.

The bodywork was modified to include front and rear diffusers and louvers for improved aerodynamics.

Most mechanical floors require external vents or louvers for ventilation and heat rejection along most or all of their perimeter, precluding the use of glass windows.

New for 1960 was a standard vinyl roof covering, and the small chrome " louvers " returned ( first seen in 1942, last seen in 1956 ) mounted on the rear fenders, just ahead of the tail lights.

Other than a slightly revamped grille and rear bumper, 1964 saw few exterior changes-including the Cadillac wreath and crest ornament moving from the rear fender of the 1963 model to take the place of the C-pillar mounted louvers for 1964.

These two body styles had the eggcrate hood louvers typical of all Fisher bodied Cadillacs for 1937.

The building incorporates a Buckminster Fuller tensegrity structure in its roof, and features motorized louvers on its south face for improved sun control.

In the days before mechanical fans and air conditioning a series of mechanically operated louvers allowed for window panels to be opened to help cool the sanctuary inside.

Meant as a computer workstation, it had louvers and an integrated ventilation system, as well as a host of built-in features typical of the ergonomic desk.

this façade integrates inside of it high technological louvers system, together they work to maximize daylight, minimize heat gain / loss, maximize natural ventilation and control wind.

Temperature control was achieved through the use of adjustable louvers mounted on six of the electronics assemblies, plus multilayer insulating blankets, polished aluminum shields, and surface treatments.

Early Soviet tanks had poorly designed engine louvers which allowed the admission of fuel – this design fault was quickly rectified, and subsequent armoured vehicles had engine louvers which drained fuel ( as well as rain water and dust ) away from the engine.

Active thermal control makes use of electrical heaters and certain actuators such as louvers to control temperature ranges of equipments within specific ranges.

Thermal control was achieved through the use of passive reflecting and absorbing surfaces, thermal shields, and movable louvers.

Thermal control was achieved through the use of adjustable louvers on the sides of the main compartment.

Thermal control was achieved through the use of passive reflecting and absorbing surfaces, thermal shields, and movable louvers.

Exclusive to the 1958 model were hood louvers and twin trunk spears.

They projected onto a deeply curved screen, the outer thirds of which were made of over 1100 strips of material mounted on " louvers " like a vertical venetian blind, to prevent light projected to each end of the screen from reflecting to the opposite end and washing out the image.

The 6x9-inch speaker vents to smaller louvers, cut on either side of the Leslie cabinet situated just under the top rotor louvers.

But only one set of smaller louvers has any signal.

These two holes catch the 6x9-inch speakers ' reverb sound coming off the special 6x9-inch enclosure as the speaker vents to both the louvers and the round holes into the rotor cavity at the same time.

Both the grille and hood louvers curved down and forward.

Adjoined to the southern shard is a hotel which features the wrap around metallic screen and glass louvers.

Vertical grille inserts replaced the horizontal bars of the 1969, movement of " Grand Prix " nameplates from the lower cowls to the rear C-pillars and the vertical chromed louvers from the C-pillars down to the lower cowls, highlighted the 1970 Grand Prix.

The turbo version of the Laser could be recognized by its use of black hood louvers.