ThinkGrow’s Model-H Plus 5' is a 720‑watt, eight‑bar LED fixture engineered for wide 5‑foot racks and high‑PPFD cultivation. The 5' version measures 57 x 44.6 x 4.44 inches and weighs about 41.8 lb, using 3,368 top‑bin Samsung LM301B whites with Samsung LH351H 660 nm deep red. Four independently controllable channels—UV, White, Deep Red and Far Red—support recipe tuning via TrolMaster Hydro‑X control, with on‑board dimming and group control as alternatives. PPF is approximately 2,016 µmol/s and the housing carries an IP56 rating, with an L90 lifetime over 54,000 hours. Recommended canopy coverage is up to 5 x 5 ft in veg and around 4 x 4 ft in flower. Autosensing 100–277 V drivers are standard; 347–480 V variants are also available.