Thor Forums

[The Gritz Carlton]

If you cut a shoe box in half and imagine the box is the area of your truck cab and the lid is the Thor cap...the cap sets over the "aluminum channel" just as the shoe box lid sets over the box and rest on the truck cab roof. Fasteners are installed from the inside, horizontally along the padded area where your privacy curtain fasteners are. If you can remove the decorative trim from this area, you might be able to access the area where the fasteners are (or are missing). I didn't get to see how the aluminum channel is attached to the truck roof but I would imagine it's from the inside with fasteners in a vertical position, up into the aluminum channel. There is also flat trim installed along the roof across the front and both sides where the cap meets the body. Hope this helps...have you called CS to see if they can send you a drawing specific to the attachment process of your unit?