Awning brackets and weight of awning ??


I just got a 2000 ARB awning and couldn't believe how heavy that thing is,my concern is the brackets,I was going to make brackets and just put it on 4' bar on my trailer.I'm used to those 8' bag awnings I have on another camper and they are very light compared to these some one post some pics of these awning brackets on trailers cause I'm really concerned about the weight issue,I've done a pretty good search but didn't come up with much…Thanks