37
LENNOX HEARTH PRODUCTS • MERIT PLUS
®
DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Listed Secure Flex
®
Components
Cat. # Model Description
H1969 SF4.5HT-2 Horizontal Square Termina-
tion for fl e x (without fl ex
vent)
77L87 SFKIT12S
Square Term. for fl e x
(with 12 in. [305 mm]
compressed fl ex vent**)
77L88 SFKIT18S
Square Term. for fl e x
(with 18 in. [457 mm]
compressed fl ex vent**)
77L89 SFKIT24S
Square Term. for fl e x
(with 24 in. [610 mm]
compressed fl ex vent**)
77L90 SFKIT36S
Square Term. for fl e x
(with 36 in. [914 mm]
compressed fl ex vent**)
77L91 SFKIT48S
Square Term. for fl e x
(with 48 in. [1219 mm]
compressed fl ex vent**)
94L04* SFKIT12SS Small Square Termination for
fl e x , with 12 in. (305 mm) of
compressed fl ex vent**
(Ref. Instr. #750204M)
94L05* SFKIT18SS Small Square Termination for
fl e x , with 18 in. (457 mm) of
compressed fl ex vent**
(Ref. Instr. #750204M)
94L06* SFKIT24SS Small Square Termination for
fl e x , with 24 in. (610 mm) of
compressed fl ex vent**
(Ref. Instr. #750204M)
94L07* SFKIT36SS Small Square Termination for
fl e x , with 36 in. (914 mm) of
compressed fl ex vent**
(Ref. Instr. #750204M)
94L08* SFKIT48SS Small Square Termination for
fl e x , with 48 in. (1219 mm)
of compressed fl ex vent**
(Ref. Instr. #750204M)
94L09* SF-HTSS Horizontal Small Square
Termination for fl e x , without
fl ex vent (Ref. Instr. #750204M)
INSTALLATION ACCESSORIES CONTINUED
*Only for use with MPDT33 and MPD35 models.
**All compressed fl ex vents can be expanded up to two times.
Listed Secure Flex
®
Components
Cat. # Model Description
These termination kits include fi restop/spacer, gear clamps and fl ex adaptor.
60L10 SF-18 18 feet (5.49 m) *
compressed fl e x
(Ref. Instr. #750053M)
98K03 SF-12 12 feet (3.66 m)*
compressed fl ex
(Ref. Instr. #750052M)
H2248 SF4.5HF-10 Firestop / Spacer—
Horizontal, fl e x (3-1-1
spacing), 10 Pack
H2249 SF4.5VF-10 Firestop/Spacer—Vertical,
fl e x (1-1-1 spacing), 10 Pk
56L74 SFVT30
Vertical Termination for fl e x
(fl at to 6/12) with fl ex adaptor,
section of rigid vent, roof
support collar assembly, roof
fl ashing and storm collar.
(Ref. Instr. #750052M)
56L75 SFVT45
Vertical Termination for fl e x
(6/12 to 12/12) with fl ex
adaptor, section of rigid
vent, roof support collar
assembly, roof fl ashing,
and storm collar.
(Ref. Instr. #750052M)
91L66 SFGC4-6 Gear Clamp 4.5 in. (114 mm)
for fl e x (6 pack)
91L67 SFGC7-6 Gear Clamp 7.5 in. (190.5
mm) for fl e x (6 pack)
H7748 H7748
36 in. Flex Connector
Kit. 36 in. of fl ex with
two adaptors for mating
two rigid sections of vent
together.
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