Unique Hydroponics Grow Boxes The Most Sold Grow Box in the country. View our stealth hydroponic grow cabinets here, or view our two best sellers below. Sale! Yield Machine Max 4 Foot UFO Grow BoxRated 5.00 out of 5 $559.99 – $579.99 Select options Sale! Mother Machine Max LED Grow Cabinet $849.99 $729.99 Add to cart Full Beginners Instructional brochure and lifetime grow support with every box. Follow on Instagram below and see proof these boxes work. Load More...Follow on Instagram Or Check our Grow Cabinets in action on local blog. Uploads welcome.* #1 Personal sized Hydro Grow Cabinets and Soil Grow Boxes for sale since 2008, made in USA. Free, discreet shipping thru fedex ground.