LOUVRES & MESH
ANEMOSTAT FIRE RATED FUSIBLE LINK LOUVRES
There are two solutions for fire rated steel or timber doors where ventilation is required by means of a louvre. The FLDL-UL (see below) is a self attaching fusible link louvre
fire tested at Warrington Fire Research Centre for two hours up to a maximum aperture size of 610x610mm, and the FBLS (see pages 106-107) is a two part louvre for each
side of the door with an intumescent fire block that sits in the centre. The FBLS has been assessed by Warrington Fire Research Centre for four hours up to a maximum
size of 457x1524mm (width x height). Both are available from stock in standard galvanised grey primed finish, suitable for powder coating (powder coat FLDL-UL in open
position and operate immediately after, before paint dries). These systems complement the standard AFDL self-attaching louvre already used by many door companies and
available ex-stock, as detailed on pages 98-100.
The Anemostat FLDL-UL is a self attaching louvre (i.e. no holes need be drilled in the door) with concealed fixings one side, and is suitable for two hour fire rated doors
(integrity), when fitted to previously tested steel based fire resisting doorsets. Copy of Warrington Fire Research Centre Reports C126505 and WF189436 available on
request. Also suitable for 30 minutes integrity on 44mm thick timber fire doors using AL134PSA intumescent aperture liner and 60 minutes integrity on 54mm thick timber
fire doors using AL218PSA intumescent aperture liner. See page 97 for intumescent aperture liners which are self-adhesive and should line all four sides of the door cut-out
before the louvre is installed. In normal operation the blades can be opened and shut manually by means of a finger pull (always mounted on lower right hand side). In the
event of fire, it has a fusible link which parts at 165°F (74°C) and allows the stainless steel spring mechanism to snap the louvre blades shut. A simple adjustable louvre
with similar mechanism, but without the fusible link (ref ADL) is shown on page 104.
FLDL-UL SPECIFICATION
MATERIAL
FREE AIR FLOW
18GA. galvanised steel frame and
louvre blades.
40% free area.
MESH
16GA. galvanised steel inner
support members.
The operating finger pull makes it
difficult to use mesh with this louvre.
FIRE RATING
Galvanised steel grey primed – other
finishes including stainless steel Grade
304 and Grade 316 available to order.
Two hours integrity on steel doors,
maximum aperture size 610x610mm to
BS476: Part 22: 1987. Also 30 mins and
60 mins on timber doors when used
with Anemostat intumescent aperture
liners AL134PSA and AL218PSA, to BS
EN 1634-1:2000.
Please note the top of the louvre should
be mounted no higher than 1000mm
from finished floor level. If an aperture
reinforcing channel is fitted then it is
imperative this does not interfere with
the fusible link mechanism located
along the top edge. We recommend
at least a 6mm recess in steel doors
to ensure free operation in the event
of fire. Details of UL Listing from USA
available on request.
Before powder coating this product
it will be necessary to remove the
fusible link as this may be activated
by the temperatures involved in the
powder coating process. It can easily
be replaced after powder coating. In
case of difficulty we are able to forward
you an instruction video. Care should
be taken to ensure that blades operate
correctly after powder coating and
before the paint dries. Spare fusible
links are available, ref SFL.
3/16"
( 5mm)
1 3/4"
(44mm)
or up to
2 1/2"
(64mm)
3/16"
( 5mm)
PRODUCT REF.
DOOR CUT-OUT (W X H)
FLDL-UL.44 1212
305x305mm cut-out
FLDL-UL.44 1810
457x254mm cut-out
FLDL-UL.44 1818
457x457mm cut-out
FLDL-UL.44 2020
508x508mm cut-out
FLDL-UL.44 2424
610x610mm cut-out
PRODUCT REF.
DOOR CUT-OUT (W X H)
FLDL-UL.W 1212*
305x305mm cut-out
FLDL-UL.W 1810*
457x254mm cut-out
FLDL-UL.W 1818
457x457mm cut-out
FLDL-UL.W 2020*
508x508mm cut-out
FLDL-UL.W 2424
610x610mm cut-out
SFL
Spare fusible link
165° F (74° C)
FUSIBLE LINK
& HEAT SLOT
AT TOP
STOP
BLADE
SPRING CLIP
STAINLESS
RIVETS
1"
(25mm)
ORDER SIZE MINUS 1/8" (3mm)
To suit 44-46mm thick metal and timber doors as standard. (.44)
Expandable model available ref. FLDL-UL.W to suit doors 45-55mm thick.
OPERATING
LEVER
(ALWAYS ON
LOWER RIGHT
HAND SIDE)
INSIDE
ORDER
SIZE
&
DOOR
CUTOUT
ORDER SIZE PLUS 7/8" (22mm)
DOOR THICKNESS
LOUVRES & MESH
FINISH
O.D.
FRAME
OUTSIDE
ORDER SIZE MINUS 3/8" (10mm)
Imperial complete inch sizes only available i.e.12”/305mm, 14”/356mm, 16”/406mm, 18”/457mm,
20”/508mm, 24”/610mm etc.
UP TO
2 1/2"
(64mm)
Other sizes available to order from minimum size of 305 x 152mm up to maximum size of 610 x 610mm
(all dimensions w x h).
FRACTIONAL INCH SIZES NOT AVAILABLE.
All products usually available ex-stock except those marked with * Call for lead time
TEL: +44 (0)1785 282910 | WWW.ZEROPLUS.CO.UK
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