Additional District and Sessions Judge Ram Narayan also imposed a fine of Rs 30,000 on each of them last evening.
The convicts were Radheshyam (28), Gangaram (30), Virendra (30) and Satbir (32).
Police said the convicts had confined the married woman in a house and took turns in raping her on August 2, 2014.
An FIR was registered at Ahmadgarh police station by the woman's husband and subsequently, they were arrested.
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