I cannot help you on the brand but I have the same slide that doesnt have any branding on it. You are at an advantage over me as I do not have any supports or the ladder. Would you be willing to get me some measurements of what you do have? The length of the ladder rails and the two lower legs?
18x36 inground / 28k gal / Phanton vinyl liner (replaced in 2009) / Hayward Pro Series sand filter / Hayward 1hp pool pump / Hayward 3/4hp booster pump
Sorry it took so long to reply.
The ladder seems to be exactly 7 feet tall.
The shorter leg I have is 28 and 3/8" long.
The long back leg I have is 45 and 7/8" long.
All legs are 1 7/8" in diameter.
I believe this is a: AquaSlide 'N Dive Pool Slide