The interior off-white plastic garnish trims out the interior and is included.  It fits roofs 1-7/8" to 3" thick, but can be trimmed for thinner roofs.

Please note: This is a complete vent unit and must be installed in your trailer roof's 14"x14" rough opening. To install it, you will need to remove your existing vent unit enitrely.

1. If replacing an existing unit, remove interior trim first.  Then remove old vent assembly from rough opening in roof.
2. Clean rough opening and ensure that it is approximately 14.5" x 14.5".
3. Place putty tape or polyurethane sealant around bottom edge of roof mounting flange.  Orient the vent so that the hinge is towards the vehicle front and insert vent into the opening with the screen frame extended through the roof cavity.
4. Secure the vent to the roof with #8 screws of sufficient length through themounting holes in the flange.
5. Place the ceiling garnish into the groove around the screen frame.  Drive #8 screws through the mounting holes and tighten to ceiling.  Be careful not to over tighten and distort the garnish.