The best new propagator we've seen for a long time, with a host of useful features, the Vitopod looks smart and works equally well in conservatory, greenhouse or near a window indoors. Temperature control accurate to 1°C with a range of 5-30°C - the most accurate propagator on the market! External electronic thermostat control with internal temperature probe. Splashproof heated base tray with no hot or cold spots (Single - 50 watt, Double - 100 watt). Clear covers are built to last (from the same durable, UV resistant acrylic material as aircraft windscreens!). Large adjustable vents in both the lid and sides allow good humidity control. Adjust the height quickly and easily with optional add-on layers. Available in two sizes: Single length: 55cm (21½") long x 56cm (22") wide x 22cm (8½") high; Double length: 1.11m (3'8") long x 56cm (22") wide x 22cm (8½") high. Additional 16cm (6") high add-ons are available to double or triple the height and turn your propagator into a 'mini greenhouse' that's ideal for growing on, hardening off or overwintering plants.