Roller shutters consist of horizontal slats or bars hinged together that are raised to open and lowered to close, providing protection from weather, fire, and theft. They have many applications including for garages, warehouses, and more. There are manual, spring assist, and motorized types. Roller shutters are customizable, compact, low maintenance, but also expensive to install and repair with limited design options. They are made of materials like aluminum and steel.

1. ROLLING SHUTTERS
NAME- ABHIJYOTI DEY ROLL NO. 1

2. WHAT IS A ROLLER SHUTTER?
A roller shutter, coiling door, roller door or sectional overhead door is a type of door or window
shutter consisting of many horizontal slats or sometimes bars or web systems hinged together. The
door is raised to open it and lowered to close it. On large doors, the action may be motorized. It
provides protection against wind, rain, fire and theft.

3. APPLICATIONS
Roller shutters have many applications including doors for vans, garages,
kitchens, schools, prisons and warehouses. In some parts of the world, roller
shutters are subsidized by local governments. In areas that are frequently
exposed to inclement weather, roller shutters are used as a method of insulation,
can protect windows against hail damage, and can be made to withstand high
wind.

4. TYPES OF ROLLING SHUTTERS
Manual
With gear drive from the shutter roller traced through the building facade to a universal joint on the room side that is operated by a cranked
winding handle.
Manual tape
A tape drive around a flange on the roller is traced through the building facade with pulley guides to an inertia reel on the room side:
Spring Assist
Spring assist roller shutters are operated by manually lowering or lifting the handle which is mounted to the curtain end slat. Most cost effective solutions
for securing small spaces.
Motorized / Electric
With a tubular motor fitted within the roller axle tube. Automatic operation can be added. Controlled with a smartphone, remote or hardwired switch.

5. ADVANTAGES OF ROLLER SHUTTER DOORS
CUSTOMISABLE:-
One of the advantages of roller doors is that it is customizable to fit even the most tricky garage
spaces.
Compact and Ease of Use:-
This type of garage door doesn’t have any internal tracks as opposed to other types of garage doors
Low Maintenance:-
Not only are they able to provide high level of security, roller garage doors are also durable to
withstand any harsh weather conditions and only require periodic maintenance to continue
functioning and serving its purpose.

6. DISADVANTAGES OF ROLLER
SHUTTER
Expensive:-
Since they are first used by commercial and business establishments, roller garage doors
are somehow expensive and could not be easily afforded by some homeowners. Repairs
and parts could also be expensive but if you would properly care for it, and since they are
sturdy and low maintenance, the cost to buying and installing them would be the only
expenditure for the garage door for a long time.
Installation:-
It is difficult to install and needs the expertise and skills to install these type of doors
Limited Design:-
Another disadvantage of this type of garage door is the limited design.

7. SPECIFICATIONS:-
Rolling shutter is made up of Aluminium , galvanized steel, stainless steel.
Operation Options:-
There are four traditional options to operate a roller shutter
• Manual lift & up pull down
• Hand chain operation, the user pulls the chain in the direction of closing/opening.
• Single phase tubular motor via a up and down switch
• Industrial 3 phase powered motor via a up and down switch