I didn't weigh it motoman its all aluminum and doesnt feel like much in my hand, ill slap it on my refrigerant scale when I get back over to the shop after lunch ill weigh it with and without the filter. Here's some pics of it unmocked up. The tubing sitting on it is what will be cut down and welded on for the outlet. Also there will be a drain tube added with a plug and if I want to run a smaller filter like a 6" or 6.5" k&n I can fit a battery in the box as well.