Lowell LUH-BOX Specifications
Description
Lowell LUH-BOX is a universal surface OR recessed backbox
for extreme environment installations of paging horn Model LUH15T. Dual functionality allows a single model to be ordered and
stocked for surface or recessed use. A finish trim plate, Model
LUH-TP, covers rough openings in recessed installations (order
separately).The backbox is ideal in schools, medical facilites,
transportation terminals, prisons, commercial or industrial spaces
and where the durability of an extreme weather- resistant backbox facilitates installation of environment resistant horn Model
LUH-15T. The clean, square design is precision formed from 20gauge stainless steel and finished in powder epoxy paint for
exceptional durability in both indoor and outdoor installations.
The rear of the backbox is punched with a universal mounting
pattern for installing to a 4” square, 4” octagon, 2-gang or 1-gang
E.O. box. The rear also includes a .375” hole with grommet for
wire access. The backbox features four .875” conduit knockouts
(one on each side) and measures 10.5” SQ x 4.0” D. The backbox is finished in Lowell’s durable Network Grey powder epoxy.
The backbox is engineered specifically to mount Lowell’s narrow
profile 15W Unihorn compression driver Model LUH-15T. The
horn and grille trim ring install to the backbox using the horn’s
screwdriver adjustable clamps (dogs) - see page 2 for clampmounting diagram. The horn’s fine perforated grille, included with
the horn, press fits into the grille trim ring. Optional vandal resistant grille Model LUH-VRG may also be ordered separately to
screw mount to the grille trim ring if needed.
Grille Model LUH-VRG (11.5”SQ) is an optional environmentresistant cast aluminum grille for Unihorn Model LUH-15T. The
grille includes a painted stainless steel barrier screen and tamper-resistant screws. The grille is painted in durable Network Grey
powder epoxy finish to match the backbox and the horn.
A & E Specifications
The surface or recessed backbox for Unihorn compression driver Model LUH-15T shall be Lowell Model LUH-BOX. The backbox shall be fabricated of 20-gauge stainless steel. The rear of
the backbox shall include provisions for mounting to a 4" square,
4" octagon, 2-gang, or 1-gang E.O. Box. It shall also include a
3/8" diameter hole with grommet in the rear for wire access and
four .875” conduit knockouts. The backbox shall measure 10.5”
SQ x 4.0” D and shall be finished in neutral Network Grey powder epoxy paint. For recessed applications, trim plate Model
LUH-TP shall be specified to cover the rough opening. LUH-TP
shall be corrosion-resistant aluminum painted in Network Grey
epoxy. It shall measure 11.5” SQ x 0.188”D. For vandal resistant
applications, optional grille Model LUH-VRG shall be specified. It
shall be cast aluminum with a painted stainless steel barrier
screen. It shall be finished in Network Grey powder epoxy and
mount to the trim ring using tamper-resistant hardware.
Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.
Call 800.325.9660, 636.257.3400 • Fax 636.257.6606 • Click www.lowellmfg.com
Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.
Download and print this spec from www.lowellmfg.com to insure that you have the most current information
3b-403
pg 1 of 2
Printed in U.S.A. © 05-15-06
LUH-BOX
Surface & Recessed Backbox for Unihorn
TM
Model LUH-15T
LUH-BOX
Stainless steel heavy-duty backbox
LUH-BOX + Perf Grille
Shown with mounted LUH-15T Horn and
perforated grille included with horn.
LUH-BOX + LUH-VRG Grille
Shown with mounted LUH-15T horn
and vandal-resistant grille LUH-VRG.
LUH-TP
Required trim plate for
recessed installation or LUH-BOX
Backbox Specifications
Model Description Dimensions Mounts Speaker Mounts Grille
(order separately)
LUH-BOX Surface or recessed backbox 10.5” SQ x 4.0” D LUH-15T Unihorn LUH-Grille (included with LUH-15T
20 gauge stainless steel UnihornTM) or vandal-resistant LUH-VRG
(order separately)
LUH-TP Aluminum trim plate for 11.5” SQ x 0.188”D ----------------------------------------------------------------------------------------
recessed mounting of LUH-BOX
LUH-BOX
Surface & Recessed Backbox for Unihorn
TM
Model LUH-15T
Lowell Manufacturing Company • 100 Integram Drive • Pacific, Missouri 63069 U.S.A.
Call 800.325.9660, 636.257.3400 • Fax 636.257.6606 • Click www.lowellmfg.com
Lowell makes every effort to provide accurate information and reserves the right to change specifications and/or improve manufacturing methods.
Download and print this spec from www.lowellmfg.com to insure that you have the most current information
3b-403
pg 2 of 2
AUDIO
12”/10”
Speakers &
Accessories
8”
Speakers &
Accessories
6”
Speakers &
Accessories
4”
Speakers &
Accessories
Horn
Speakers &
Accessories
Masking
Speakers &
Generators
Control
Accessories
& Electronics
Grilles & Backboxes
Front
Side
Rear
Side
LUH-TP Optional Trim Plate
LUH-BOX + LUH-TP (Recessed use)
LUH-BOX (Surface use)
10.5
.875
4.0
7.281
8.875
4.0
10.5
.875
.875
10.5
.875
4.17
11. 5
.
25
11. 5
11. 5
11. 124
.188
.188
7.281
8.875
LUH-TP (Trim plate for recessed use)
LUH-BOX
Side View
LUH-BOX + LUH-TP Trim Plate
LUH-BOX + LUH-TP Dimensions
(Optional LUH-TP is required for recessed installations only).
Recessed Installation of LUH-BOX
Shown with LUH-15T horn and supplied grille.
Surface installation of LUH-BOX
Shown with LUH-15T horn and supplied grille.
Stainless steel box LUH-BOX
(10.5”Sq x 4”D) mounts
recessed or surface.
Aluminum trim plate
LUH-TP (11.5”Sq)
screws to
box (for recessed use only).
LUH-15T horn with trim
ring clamps to trim plate.
Trim ring covers screws.
Grille press-fits
to horn.
Stainless steel box LUH-BOX
(10.5”Sq x 4”D) mounts
surface or recessed
.
LUH-15T horn with trim ring
clamps to box.
Grille pressfits to horn
.
Installation Options
UNIHORNTMLUH-15T - 15W 70/25V Package
Includes perforated grille and trim ring.
Perforated Trim Ring / Grille Optional Vandal-resistant Grille
included with LUH-15T LUH-VRG
(9.6” Dia., Aluminum) Cast aluminum with stainless steel screen
(Shown with trim ring supplied with horn)
Architectural trim ring & grille (included) feature a fine perforated screen
and no hardware.
Front and rear access transformer
taps
Screwdriver
adjustable clamps
Companion Accessories
Model Description
LUH-15T 15W Unihorn 3.72”D + trim ring and grille
LUH-VRG Grille-vandal resistant cast alum for LUH-15T
Trim ring covers unused
screw holes.
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