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If you need to get a ladder for a particular task, you might want to know more about ladder in general. This may help in your choosing the right ladder for the job. The rigid ladder is often the ladder type used for most tasks. Rigid ladders come in many varieties – fixed, extension, step, platform step, and roof. The fixed ladder is the most basic, and has no moving parts. Extension ladders are the type that can be lengthened, since one part is nested in the other for storage. Step ladders are always joined by a hinge at the top of its inverted V form. A platform step ladder has a platform at the top. If you need to climb up the roof or do some outdoor house painting, you need a roof ladder, which has a hook at the top, for easy latching on the roof. The preferred material for many ladders, except those used in electrical work is aluminium.
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