Since each and every grow area has its specific needs and requirements, all pieces of equipment come in a variety of sizes and allow a degree of adjustment. Once you have all hardware you need to grow cannabis - lighting, ventilation, carbon filters etc, you will have to install it somehow.
To help you with these, we offer a range of useful tools. What you will use with surprising frequency is the ubiquitous duct tape. A proper one - strong and wide - offers high endurance and water and smell insulation at a very low cost.
Those bits and pieces are also necessary for DIY cannabis growers - if you plan to adjust your room yourself, without the use of dedicated growing tents etc, you might think about a special reflective foil to cover your walls, as well as any other bulky thing you put in the grow area, to minimise light loss.