Stewart Premium Large Electric Variable Temperature Propagator A variable temperature electric propagator includes a heating element and thermostat which ensures the temperature is maintained at the correct level. FREE POSTAGE £63.95 Quantity: at £63.95 each Add To Basket This quality 52cm Premium Variable Temperature Electric Propagator has adjustable ventilation to help control humidity and air temperature. The temperature in the propagator can be varied between 12 to 28 degrees using an easy to control thermostat. Large size propagator - 52cm x 41.5cm x 28cm. Includes a starter kit of 1 large seed tray, 2 small seed trays and 10 flower pots. Crystal clear cover and a durable base tray. Easy to use - fitted plug included. The plants shown in the illustration are not included.