Instructions / Assembly
Installation Instructions 
Please read before installation 
866-794-7900 
www.speediboot.com 
Installing the  Speedi-Boot 
Step 1 
After the location of the vent boot has been 
determined, make a measured mark on the left and 
right truss-joist for square and straight installations 
Step 2 Extend the hanger arms & place one end of 
the arms on top of the truss-joist (if possible) for 
temporary support. See Figure 1 
Figure 1 
Step 3 
Place the hanger bar feet flush with the bottom of 
the truss-joist and hammer the attached nail into 
the truss-joist. Install an additional nail or screw 
thru the provided pilot hole on either side of the nail 
cradle. This prevents the hanger arm from twisting 
and the hanger body from flexing during trim 
register installation. See Figure 2 
Figure 2 
Step 4 
Slide the hanger body to the desired position and 
secure into place by using the lock screw or by 
installing a sheet metal screw thru the pilot holes in 
the hanger arms into the hanger body. This 
additional screw provides added strength. See 
Figure 3 
Figure 3 
Optional Positioning 
The hanger arms come assembled on the long side 
of the hanger body. A slide stop at the end of the 
arms prevents them from sliding apart during 
installation. 
Step 1 
The arms may be removed by sliding the arms 
apart with a quick motion separating the two 
pieces. Reassemble the arms into the extended 
tabs. The hanger arms may be shortened to fit 
narrow framing by breaking at the score points on 
both arm pieces. See Figure 4 
Figure 4 
Floor Installations 
Step 1 
There are four pre-piloted holes in the four 
corners of the Speedi-Boot to fasten to the 
bottom of the floor decking with sheet metal or 
wood screws. You may also use the trim register 
pilot holes and the hanger arms to secure to the 
floor decking. This creates a tight fit and 
compresses the rubber gasket to the floor deck 
eliminating air leakage. The hole in the floor 
decking must be cut 3/8” larger than the 
outer mud-ring dimension. 
Figure 5 
Dust & Debris Cover 
Step 1 
The Speedi-Boot’s Dust & Debris Cover prevents 
construction dust, debris, texture spray, primers, 
paints and stains from contaminating the duct 
work system and HVAC equipment. This assists 
in maintaining the efficiencies & capacities of the 
HVAC system and improves the Indoor Air 
Quality of the structure. See Figure 6,7 
Figure 6 
Step 2 
The Speedi-Boot’s Dust & debris Cover may also 
be utilized as a plug to perform Duct Pressure 
Testing against. This feature will eliminate the 
necessity to plug each supply and return location 
increasing the Speed of the testing procedure. 
Trim Out 
Step 1 
The Speedi-Boot’s rigid Mud-Ring provides a sturdy 
edge for the sheet rock installer to cut against at 
each vent boot penetration. This prevents boot 
deformation and provides a more consistent and 
Speedi trim installation process. See Figure 6,7 
Figure 7 
Step 2 
Pre-Pilot holes in the Speedi-Boot frame provide a 
more solid Register trim installation. This provides 
Speedi installations and solid register backing that 
prevents loose or saggy register trim installations. 
See Figure 7 

