Mammoth Propagator 125 is a 3.9′ x 2.0′ x 4.0′ propagation tent designed for multiple trays of seedlings and cuttings. The extra height compared to smaller propagators allows you to run shelving and taller starter plants under low-heat lighting. Light-tight construction, reflective inner walls, and a removable waterproof tray help you maintain stable humidity and temperature while keeping spills contained.