Huber Unistat 915w with Pilot ONE UL Listed:Yes they have a heavy-duty copper

they have a heavy-duty copper coil for increased durability and performance

Measures sun-blocking capabilities of window curtains

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You may be advised to strengthen the edges with monofilament or string to stop the edges from sagging

the 4 pcs Self-watering Pots Base System Kits work well with a 4X4' or 5X5' Grow Tent

Huber Unistat 915w with Pilot ONE UL Listed:Yes they have a heavy-duty copperHuber Unistat 915w with Pilot ONE (Please Note: There is a 2 3 weeks lead time) Unistat Circulators are an ideal solution for fast and precise thermal control of externally connected applications. These systems offer rapid temperature change and a wide temperature range without having to change fluid. The new Pilot ONE controller features a navigation system with easily remembered icons and menus which are sorted by color to make routine work simpler.