New economical way to protect concrete test specimens in the field. Thermostatically controlled for that "Set it and forget it" set up. Perfect for curing test specins in the fall/winter seasons. 1/3 the cost of some of the other models available. Accommodates up to 4- 6x12" cylnder molds & 12- 4x8" cylinder molds with flat lids. Meets ASTM C31 & AASHTO T-23 compliant. All units are lightweight (under 30 pounds empty) and have lifting handles for "empty" transport. Includes Hi/Lo thermometer (ASTM C1064) and requires 110 Volt AC. Conforms to ASTM C31 & AASHTO T-23 . Shipping Info: 30" x 18" x 20" – 30 lbs. (Ships by dimensional weight) please allow 1-2 weeks for delivery.