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4‑gallon (16 L) backpack sprayer designed for professional grow, greenhouse and horticultural spraying applications.
The Rainmaker Backpack Sprayer (4 Gal / 16 L) features a rugged, lightweight chassis with padded ergonomic straps for extended use in grow rooms, greenhouses or field operations. Its large capacity tank supports longer spray cycles without refilling, making it ideal for nutrient, pesticide or foliar treatments.
Equipped with a pressure regulation system, adjustable wand and durable components suited for horticultural environments, this sprayer delivers consistent output and reliability. The design is optimized for ease of maintenance and long‑term performance in demanding conditions.