Decor Grates Flushmount Grille
Installation Guideline
Sub Floor
Finished
Floor
Frame
Flush Mount
Grille
Before you Begin:
Flush mount registers require a certain skill level to install and are targeted towards contractors and skilled
DIY enthusiasts. Please consult a professional if you are unfamiliar with installing hardwood fixtures.
Decor Grates is not responsible for damage to your home, product or person.
Staining Unfinished Flush mounts:
If you have an unfinished flush mount, ensure that you are not applying stain, paint or lacquer to the
plastic damper box. The damper box can be taken off by removing the screws. When replacing the screws
do not over tighten as it can cause damage to the damper box and/or grate.
Step 1: Position the entire flush mount (frame with
the grille and damper box) over the opening to ensure
that the damper box will slide freely into ductwork
opening once completed. Ensure your flooring and
frame are the same depth. If not, shim the frame
accordingly to match your flooring. Tack it into place
using nails or glue.
Step 2: Once the frame is affixed to the sub floor,
measure and lay flooring around the frame work. If
the flooring installed is tongue and groove, the tongue of
the flooring will fit into the groove of the frame. Please
note that Decor Grate flush mounts are designed to fit
with a standard ¾” flooring tongue. If flooring installed
is not tongue and groove, butt the flooring directly
against the side of the frame and tack it into place with
nails on an angle to not interfere with the vent opening.
For installation while laying out a new floor
Step 3: Insert the grille into the frame.
Sub Floor
Air Duct
Finished
Floor
Flush Mount
Grille & Frame
Flush Mount
Grille
Frame
Step 1: Place the entire flush mount (frame with the grille
and damper box) over the opening to ensure that the
damper box will slide freely into ductwork opening once
completed. Trace the outside of the frame to your floor.
Note: improperly sized duct openings may require resizing
to accommodate damper box.
Step 2: Drill pilot holes into each of the four corners of the
flooring that you will be removing. Do not cut or drill outside
of the traced area. Cut out the floor using a router or other
appropriate cutting tool along the lines. Remove any lose
pieces of wood, debris or obstructions to ensure the frame
sits flush on your sub floor. Underpadding or shims may be
required to match your floor level.
For installation while laying out an existing floor
Step 3: Once the frame is flush, affix the frame to the sub
floor using one of the following fasteners:
• Glue: Ensure that the glue used is compatible to the
material of your sub floor
• Nails: At an angle, drill pilot holes in the inside of the
frame, then insert nails through both frame and sub floor.
Ensure nails are long enough to penetrate the sub floor.
Step 4: Insert the grille into the frame.
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