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Flange* (Permanent Trim) for Grid/T-Bar Ceiling
The AstroHood
™
unit is installed from the top side of the suspended ceiling grid/T-bar with the
integral flange resting onto the grid/T-bar. The AstroHood unit should be sealed to the grid using RTV
(Dow Corning 732 or GE 102 is recommended).
1. Thoroughly clean the mating surfaces of the unit flange and ceiling grid to remove any debris or
residue that may inhibit an adequate seal.
2. Apply a continuous, small bead (~ ¼” diameter) of RTV to the mating surface of the grid/T-bar.
3. Center and lower the AstroHood unit into the opening and seat the unit onto the grid/T-bar. Apply
uniform pressure to ensure the flange is bonded to the grid/T-bar (see Fig. 07).
4. Remove excess RTV.
Fig. 07: Flange Mount for Grid / T-Bar Ceiling
* Flange is the same material as housing.
** Flange is not designed to support ceiling.
Field-Installed Trim* for Hard/Gypsum Ceilings
The AstroHood unit can be installed from either above the ceiling or from the room side. The unit is
suspended using either hanging tabs or mounting pads. The trim is then installed to create an air-
tight seal between the housing and ceiling, as well as a clean, flush finish.
1. Suspend housing from all four corners.
2. Level and align bottom lip of housing with finish ceiling (see Fig. 08).
Fig. 08 Field-Installed Trim 1
