Instructions / Assembly

INSTALLING METAL RECESSED DRYER VENT BOX:
The Metal Recessed Dryer Vent Box can be installed in any direction (up, down or for sideways
venting) and once installed, can accommodate stand-alone dryers or dryers that are mounted
on a pedestal. Since all standard North American dryers have an exhaust port in the bottom
center of the dryers rear panel, it is best to install this product at the bottom plate (as low as
possible on the wall it is being mounted on), unless the dryer is stacked over the washer. The
Metal Recessed Dryer Vent Box unit must be installed in accordance with the UL Cabinet
System Listing, as shown in Item 4.
1.1 Installation of Metal Recessed Dryer Vent Box (on 2
in x 6 in Studs)
Position the Metal Recessed Dryer Vent Box onto 2
in x 6 in studs: use countersunk wood
screws to secure the box to the vertical stud and the bottom plate, making sure that the holes
center lines are close to the center line of the studs. Do not over tighten the screws as it may
deform the Metal Recessed Dryer Vent Box.
1.2 Installation of Metal Recessed Dryer Vent Box For Non-Fire Rated Installation (on 2
in x 4 in
Studs) Position Metal Recessed Dryer Vent Box onto 2
in x 4 in stud. Fur out the wall ¾ in using
a 1
in x 2 in furring strip to provide adequate depth. Then use countersunk wood screws to
secure the box to the vertical stud and the bottom plate, making sure that the holes center
lines are close to the center line of the studs. Do not over tighten the screws as it may deform
the Metal Recessed Dryer Vent Box.
2. Installing In-Wall Duct Into Metal Recessed Dryer Vent Box
Slide the crimped end of a solid 26 gauge metal duct (4
in diameter) through the 4 in round
hole of the Metal Recessed Dryer Vent Box.
3. Installing Drywall
Install drywall around the Metal Recessed Dryer Vent Box, placing the cut drywall underneath
the flange of the Metal Recessed Dryer Vent Box. Caulk under and around the Metal Recessed
Dryer Vent Box trim with UL Classified intumescent sealant or caulk.
4. 1 Hour Fire Rated Walls & UL Certification
For UL Certification, vent duct to be located on top of box. To achieve a penetration firestop
system rating (1 hour F&T) 2
in x 6 in wood framing 16 in on-center is required. To achieve
a penetration firestop system rating (3/4 hour F&T) nominal 6
in deep steel stud framing
24
in on-center is required. Use a min 1 x 2 in wood nailing strip with fasteners spaced max 18
in
OC, to attach an additional layer of nom 1/2 in thick gypsum board to the inside of the stud
cavity. Make sure the additional layer of gypsum board is installed flush with the edge of the
studs on the non – penetrated face of the wall. Insert a 4
in steel exhaust pipe through the
opening at the top of the Metal Recessed Dryer Vent Box. Using a UL Classified intumescent
sealant or caulk, apply a bead of ¼
in. to 3/8 in. caulk around the vent pipe on both the inside
and outer side of the box around the circumference of the pipe. Fill the entire wall cavity
containing the cabinet and vent pipe and all spaces between the cabinet and adjacent studs
and plates with mineral wool thermal insulation in compliance with UL Classified for Fire
Resistance or Forming Materials, nominal density minimum 4.0
lb/ft
3
(64 kg/m
3
). The insulation
must be tightly packed to fill the stud depth and cavity height. The immediate adjacent wall
stud cavities (wall cavities on each side of the cavity containing the cabinet) shall be
insulated with min R13 glass fiber batt insulation (or min 4 pcf mineral wool batt material) for
the full depth and height of the stud cavity. Refer to UL Fire Resistance Design for details of
wall construction. The rigid steel vent duct fitted into the top opening of the Metal Recessed
Dryer Vent Box should be a maximum of 4
in (101 mm) diameter and a minimum of 26 gauge
rigid steel.
CONTENTS:
(1) METAL RECESSED DRYER VENT BOX
GYPSUM
BOARD
MOUNTED
OUTSIDE
OF STUD
GYPSUM
BOARD
MOUNTED
ON ID OF
STUD
WARNING:
CAUTION, SHARP EDGES
METAL RECESSED DRYER VENT BOX