This paper model is an Overlord, one of the primary 'Mech transport DropShips in the Inner Sphere, from the video game MechWarrior 4, the papercraft is created by BLaaR. The size of finished model is about 200 (H) x 179 (W) x 176 (D) mm.
Capable of carrying a full 'Mech battalion and a squadron of ASFs, as well as most of the technical support for both, the nearly-10,000 ton vessel has proven its worth as a dedicated combat transport. Usually kept out of combat to minimize the risk of loss of these expensive vessels, when grounded they often serve as dedicated command stations and resupply bases in longer campaigns. These highly valued ships started to become scarce in the later Succession Wars, but rediscovered technology and refits have continued to keep them in service. [Source: sarna]
You can download the papercraft model here: MechWarrior 4 - Overlord Dropship Free Paper Model Download