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 ex (without flex
vent)
77L87 SFKIT12S
Square Term. for ex
(with 12 in. [305 mm]
compressed flex vent**)
77L88 SFKIT18S
Square Term. for ex
(with 18 in. [457 mm]
compressed flex vent**)
77L89 SFKIT24S
Square Term. for ex
(with 24 in. [610 mm]
compressed flex vent**)
77L90 SFKIT36S
Square Term. for ex
(with 36 in. [914 mm]
compressed flex vent**)
77L91 SFKIT48S
Square Term. for ex
(with 48 in. [1219 mm]
compressed flex vent**)
94L04* SFKIT12SS Small Square Termination for
ex, with 12 in. (305 mm) of
compressed flex vent**
(Ref. Instr. #750204M)
94L05* SFKIT18SS Small Square Termination for
ex, with 18 in. (457 mm) of
compressed flex vent**
(Ref. Instr. #750204M)
94L06* SFKIT24SS Small Square Termination for
ex, with 24 in. (610 mm) of
compressed flex vent**
(Ref. Instr. #750204M)
94L07* SFKIT36SS Small Square Termination for
ex, with 36 in. (914 mm) of
compressed flex vent**
(Ref. Instr. #750204M)
94L08* SFKIT48SS Small Square Termination for
ex, with 48 in. (1219 mm)
of compressed flex vent**
(Ref. Instr. #750204M)
94L09* SF-HTSS Horizontal Small Square
Termination for ex, without
flex vent (Ref. Instr. #750204M)
INSTALLATION ACCESSORIES CONTINUED
*Only for use with MPDT33 and MPD35 models.
**All compressed flex vents can be expanded up to two times.
Listed Secure Flex
®
Components
Cat. # Model Description
These termination kits include firestop/spacer, gear clamps and flex adaptor.
60L10 SF-18 18 feet (5.49 m) *
compressed ex
(Ref. Instr. #750053M)
98K03 SF-12 12 feet (3.66 m)*
compressed ex
(Ref. Instr. #750052M)
H2248 SF4.5HF-10 Firestop / Spacer—
Horizontal, ex (3-1-1
spacing), 10 Pack
H2249 SF4.5VF-10 Firestop/Spacer—Vertical,
ex (1-1-1 spacing), 10 Pk
56L74 SFVT30
Vertical Termination for ex
(flat to 6/12) with flex adaptor,
section of rigid vent, roof
support collar assembly, roof
flashing and storm collar.
(Ref. Instr. #750052M)
56L75 SFVT45
Vertical Termination for ex
(6/12 to 12/12) with flex
adaptor, section of rigid
vent, roof support collar
assembly, roof flashing,
and storm collar.
(Ref. Instr. #750052M)
91L66 SFGC4-6 Gear Clamp 4.5 in. (114 mm)
for ex (6 pack)
91L67 SFGC7-6 Gear Clamp 7.5 in. (190.5
mm) for ex (6 pack)
H7748 H7748
36 in. Flex Connector
Kit. 36 in. of flex with
two adaptors for mating
two rigid sections of vent
together.