The Grow Box 'Loft Box' 240/180 grow tent ( 240 x 120 x 180cm ). Grow Box grow tents are fantastic quality tents but with a low price. These tents are as good as any other brand out there. So if you're looking for a high quality tent that won't cost a fortune this is the brand for you. The Loft Box range are for people who are looking for a tent that is suited to attic spaces. Loft Box 240/180 grow tent features: Comes with a 1 year warranty.