Hydrofarm Germination Station With Heat MatIncludes waterproof heat mat, 2 inch humidity dome, 11 inch x 22 inch watertight base tray and 72 cell seedling insert Optimum growth with controlled humidity under the dome Strong healthier starts by giving your seeds and cuttings what they need to thrive Increased germination success by maintaining the ideal temperature range for seeds to grow Color: BLACK Size: 11X22 INCH