DUCTGARD
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Installation, Operation and Maintenance
Instructions
Page 5
6.
Masonry Wall
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(AF) EASY FIX® Angle Frame Installation
6.1
Preferably, prepare the opening whilst building the wall, or cut an opening if the
wall already exists.
6.2
The damper is not load-bearing and additional support for the top of the wall opening is achieved by
means of a lintel or other approved method.
6.2.1
The finished aperture size to be nominal duct width +125mm and nominal duct height
+100mm.
6.3
Mark out the position and size of the required cut size on the wall.
6.4
Make the hole in the wall. Oversizing the hole will require BCO approval to install the damper.
6.5
Prepare a pair of spacing blocks, (approx. 10mm high x 25mm square) from any available material
(such as drywall boards). Position spacing blocks within the opening at extremities of damper and
stand the damper (with blades running horizontally) on blocks so that damper is central in opening.
6.6
Drill out the outer row of 2mm diameter angle frame pilot holes to the appropriate size.
6.7
Fix the angle frame to the wall using suitable steel sleeved wall anchors in the
drilled holes.
6.8
It is not a necessity to fill the void behind the angle frame.
6.9
Important: Ensure that the fixing anchors are located 20mm min
from the opening’s
edges, so that the proper fire integrity of the installation will not be compromised.
Using the EASY FIX® flange system and following the instructions for making the aperture will
ensure a correct fit is achieved.
6.10
On the reverse side, fit a single pattress layer.
