need help making a grow box for flowering

alright. so I need to make a grow box for flowering about 3 or 4 plants,

I have a 400watt HPS light i want to use.

what can i use to make a grow box,
i dont want to use wood because its kinda hard to build things in the tiny attic im using.

I'm Kinda Looking for things i can pick up at a hardware store
i was thinking about 2 or 3 of those plastic tub things
but wont it get too hot with a 400watt hps?

Not sure about the heat of your light but you will need plenty of ventalation and air flow regardless....I picked up a garage cab at the hardware store, it is 29w x 36h x 20d and has 2 doors..for 49.00.. it is made of PVC, I lined it with mylar installed input and exhaust fans and it works good....I used tubs for a while but its hard working with access from top.

Mate with a 400w HPS ur gonna have to get good ventilation if u are only having a small area. Something like a cooltube will help keep the temps down and allow the plants close to the light, otherwise the plants will grow and get burnt