What kind of housing can i use for this LED recessed light?

I bought http://cgi.ebay.com/LED-White-Recessed-Down-Light-Lamp-110-220V-7w-/260644656653?pt=LH_DefaultDomain_0&hash=item3cafa1d60d#ht_3013wt_1140 But the 4" non IC housing i have for it doesn't fit, what can I use instead? If you link me to a product that would be great. I'm installing these as recessed lights.