Bill and lnt123,
The cost to build was about $80.00 in 2014. I built a rubber and aluminum frame out of 10 gauge aluminum. I saw pictures on the forum of a similar blowout shroud in 2014. I made a few modifications to the aluminum shroud which was on the forum. If I were to build it again I would make it about 5 or 6inches longer to eliminate interference with the drain valves.
First, I put a heavy rubber mud flap in front of the shroud. Bill, I have seen your posts on the mud flap to protect the plumbing. I deduced that, the mud flap in combination with the aluminum shroud would be a good solution. . .the mud flap absorbs much of the initial shock of the rapid air loss and the shroud the diverts the rubber down and around the plumbing. I had the shroud fabricated at a place called Cowboy Metal in Denver, Colorado. I am certain there are many metal fabricators in other cities. The shroud fit immediately behind the mud flap and tight against the frame of my TM. I bolted the shroud to the bracket that held the mud flap in front and attached along the frame in the rear with an aluminum angle bracket which was I was able to fabricate myself easily. I used six large pop rivets' to hold the aluminum angle to the shroud and then six self tapping screws to attach to the frame. Because of the construction of the TM I was able to bolt to the outside of the body in the rear.
The dimensions are as follows:
Height: 11 inches
Width: 13.5 inches
Length along horizontal axis: 19 inches (future versions would be 24-25 inches)
Length along 45 degree axis: 15.5 inches
Length of attachment tang in rear 1.5 Inches
10 gauge aluminum
I have never attached pictures to a post on the forum. I hope that I was able to successfully communicate my plumbing shroud. I cannot take credit for this plumbing protector. I found this on the forum several years ago and then made my own modifications. The blowout happened at 60 mph so the force of the rubber can be seen on the fender skirt at the rear of the TM in the last photo.