This mech paper model is Sha Yu, a Mech from the real-time tactics video game MechCommander 2 of the BattleTech/MechWarrior franchise, the papercraft is created by Vlmarshall. The size of finished model is about 135 (H) x 121 (W) x 133 (D) mm.
Based on the Raven BattleMech, the Sha Yu, or "Shark", is one of the first 'Mechs to incorporate the Stealth Armor developed by the Capellan Confederation. The Sha Yu is built on a lightweight Hellespont Type T Endo Steel and is powered by a VOX 280 XL engine that gives the Sha Yu an impressive top speed of 118.8 km/h. The Sha Yu is protected by six and a half tons of Hellespont Lite Stealth Armor, making the 'Mech extremely difficult to hit. The Sha Yu also carries a Guardian ECM Suite as part of its stealth armor in order to protect itself from enemy electronic warfare systems. [Source: sarna]
You can download the papercraft model here: MechCommander 2 - Sha Yu Free Paper Model Download