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Exterior Pro Materials
KaycanMount Blocks & Utility Vents

The industry standard for mounting all exterior fixtures on any surface

Mount Blocks & Utility Vents

Kaycan Mount Blocks & Utility Vents — the industry standard for mounting exterior fixtures on any siding surface. 15 standard mount block models including Original Mount Master, Jumbo Mount, Recessed Jumbo, Meter Block, and more. Specialty electrical blocks and blocks for composite and insulated siding. Utility vents including 4", 6", and 8" Hooded Vents, Master Exhaust Vent, Master Intake/Exhaust Vent, and Foundation Master vents. Available in all Kaycan siding colours. Request a quote for special orders.

Profiles & Specifications

Mount Blocks & Utility Vents - Original Mount Master profile
original-mount-masterOriginal Mount Master

Scalloped: #1128 · Square: #1118. 10 pcs/box.

Item ##1128 (Scalloped) · #1118 (Square)
pcs/Box10
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - Surface Block – Dutch Lap profile
surface-block-dutch-lapSurface Block – Dutch Lap

#1122. 10 pcs/box. Special Order.

Item ##1122
pcs/Box10
NotesSpecial Order
Mount Blocks & Utility Vents - Jumbo Mount profile
jumbo-mountJumbo Mount

#1125. 10 pcs/box.

Item ##1125
pcs/Box10
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - Slim Line Mount profile
slim-line-mountSlim Line Mount

#1127. 10 pcs/box.

Item ##1127
pcs/Box10
Locking Positions0.50" · 0.75"
Mount Blocks & Utility Vents - Surface Block – Triple 3" profile
surface-block-triple-3Surface Block – Triple 3"

#1123. 10 pcs/box. Special Order.

Item ##1123
pcs/Box10
NotesSpecial Order
Mount Blocks & Utility Vents - Super Jumbo Mount profile
super-jumbo-mountSuper Jumbo Mount

#1134. 1 pc/box.

Item ##1134
pcs/Box1
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - Large Recessed Mount profile
large-recessed-mountLarge Recessed Mount

#1143. 5 pcs/box.

Item ##1143
pcs/Box5
Locking Positions0.625" · 0.875"
Mount Blocks & Utility Vents - Surface Master – Octagon 4"–10" profile
surface-master-octagonSurface Master – Octagon 4"–10"

#1121. 10 pcs/box. Special Order.

Item ##1121
pcs/Box10
NotesSpecial Order
Mount Blocks & Utility Vents - Recessed Jumbo Mount profile
recessed-jumbo-mountRecessed Jumbo Mount

#1142. 10 pcs/box.

Item ##1142
pcs/Box10
Locking Positions0.625" · 0.875"
Mount Blocks & Utility Vents - Recessed Square Mount profile
recessed-square-mountRecessed Square Mount

#1147. 10 pcs/box.

Item ##1147
pcs/Box10
Locking Positions0.625" · 0.875"
Mount Blocks & Utility Vents - Recessed Mini Mount profile
recessed-mini-mountRecessed Mini Mount

#1126. 10 pcs/box.

Item ##1126
pcs/Box10
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - Meter Block profile
meter-blockMeter Block

#5625. 1 pc/box.

Item ##5625
pcs/Box1
Mount Blocks & Utility Vents - Jumbo Meter Block profile
jumbo-meter-blockJumbo Meter Block

#5623. 1 pc/box.

Item ##5623
pcs/Box1
Mount Blocks & Utility Vents - Mini Mount profile
mini-mountMini Mount

#1116. 1 pc/box.

Item ##1116
pcs/Box1
Locking Positions0.50" · 0.85"
Mount Blocks & Utility Vents - Split Block Mini-Mount profile
split-block-mini-mountSplit Block Mini-Mount

#1148. 10 pcs/box.

Item ##1148
pcs/Box10
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - Electrical Block profile
electrical-blockElectrical Block

#5626. 2 pcs/box. Special Order.

Item ##5626
pcs/Box2
Locking Positions0.875" · 1.125" · 1.375" · 1.625"
NotesSpecial Order
Mount Blocks & Utility Vents - Jumbo Electrical Block – ed* profile
jumbo-electrical-blockJumbo Electrical Block – ed*

#5624. 2 pcs/box. Special Order.

Item ##5624
pcs/Box2
Locking Positions0.875" · 1.125" · 1.375" · 1.625"
NotesSpecial Order
Mount Blocks & Utility Vents - Jumbo Electrical Block – Offset profile
jumbo-electrical-block-offsetJumbo Electrical Block – Offset

#5622. 10 pcs/box. Special Order.

Item ##5622
pcs/Box10
Locking Positions0.875" · 1.125" · 1.375" · 1.625"
NotesSpecial Order
Mount Blocks & Utility Vents - Super Jumbo Electrical Block profile
super-jumbo-electrical-blockSuper Jumbo Electrical Block

#5630. 2 pcs/box. Special Order.

Item ##5630
pcs/Box2
Locking Positions7/8" · 1-1/8" · 1-3/8" · 1-5/8"
NotesSpecial Order
Mount Blocks & Utility Vents - Jumbo for Water Management and Composite Siding profile
jumbo-composite-sidingJumbo for Water Management and Composite Siding

#5686. 10 pcs/box. Special Order.

Item ##5686
pcs/Box10
Locking Positions7/16" · 11/16" · 15/16"
NotesSpecial Order
Mount Blocks & Utility Vents - Split Block for Water Management and Composite Siding profile
split-block-composite-sidingSplit Block for Water Management and Composite Siding

#5682. 10 pcs/box. Special Order.

Item ##5682
pcs/Box10
Locking Positions7/16" · 11/16" · 15/16"
NotesSpecial Order
Mount Blocks & Utility Vents - 4" Hooded Vent for Water Management and Composite Siding profile
vent-4in-hooded-composite4" Hooded Vent for Water Management and Composite Siding

#5683. 1 pc/box. Special Order.

Item ##5683
pcs/Box1
Locking Positions7/16" · 11/16" · 15/16"
NotesSpecial Order
Mount Blocks & Utility Vents - 4" Hooded Vent – For Insulated Siding profile
vent-4in-hooded-insulated4" Hooded Vent – For Insulated Siding

Concealed exhaust flap. Includes 8" long aluminum tube (4" diam.). 12 sq.ft. net free area. #5684. 1 pc/box. Special Order.

Item ##5684
pcs/Box1
Locking Positions0.75" · 1.00" · 1.25"
Net Free Area12 sq.ft.
NotesSpecial Order · Concealed exhaust flap · Incl. 8" long aluminum tube (4" diam.)
Mount Blocks & Utility Vents - Master Exhaust Vent – For Insulated Siding profile
vent-master-exhaust-insulatedMaster Exhaust Vent – For Insulated Siding

Patented exhaust flaps stay closed when not in use. Includes 8" long aluminum tube (4" diam.). 12 sq.ft. net free area. #5687. 1 pc/box. Special Order.

Item ##5687
pcs/Box1
Locking Positions7/8" · 1-1/8" · 1-3/8" · 1-5/8"
Net Free Area12 sq.ft.
NotesSpecial Order · Patented exhaust flaps stay closed when not in use · Incl. 8" long aluminum tube (4" diam.)
Mount Blocks & Utility Vents - Split Block for Insulated Siding profile
vent-split-block-insulatedSplit Block for Insulated Siding

#5681. 10 pcs/box. Special Order.

Item ##5681
pcs/Box10
Locking Positions3/4" · 1" · 1-1/4" · 1-5/8"
NotesSpecial Order
Mount Blocks & Utility Vents - Original Mount Master For Insulated Siding profile
vent-original-mount-master-insulatedOriginal Mount Master For Insulated Siding

Scalloped. #5688. 10 pcs/box. Special Order.

Item ##5688 (Scalloped)
pcs/Box10
Locking Positions7/8" · 1-1/8" · 1-3/8" · 1-5/8"
NotesSpecial Order
Mount Blocks & Utility Vents - Jumbo Mount – For Insulated Siding profile
vent-jumbo-mount-insulatedJumbo Mount – For Insulated Siding

#5689. 10 pcs/box. Special Order.

Item ##5689
pcs/Box10
Locking Positions7/8" · 1-1/8" · 1-3/8" · 1-5/8"
NotesSpecial Order
Mount Blocks & Utility Vents - 4" Hooded Vent profile
vent-4in-hooded4" Hooded Vent

#1150. 1 pc/box.

Item ##1150
pcs/Box1
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - 6" Hooded Vent profile
vent-6in-hooded6" Hooded Vent

Concealed exhaust flap. Includes 8" long aluminum tube. 25 sq.ft. net free area. #1141. 1 pc/box.

Item ##1141
pcs/Box1
Locking Positions0.75" · 1.00" · 1.25"
Net Free Area25 sq.ft.
NotesConcealed exhaust flap · Incl. 8" long aluminum tube
Mount Blocks & Utility Vents - 8" Hooded Vent profile
vent-8in-hooded8" Hooded Vent

Meets the increased air flow requirements of newer high efficiency HVAC systems. Can be installed with an 8" or 7" diameter tube (not included). Adapter for 7" diameter tube is included. Concealed exhaust flap. 48 sq.ft. net free area. #1136. 1 pc/box. Special Order.

Item ##1136
pcs/Box1
Locking Positions0.50" · 0.75"
Net Free Area48 sq.ft.
NotesSpecial Order · Meets increased air flow requirements for high efficiency HVAC · 8" or 7" diam. tube (not incl.) · Adapter for 7" diam. tube included · Concealed exhaust flap
Mount Blocks & Utility Vents - Small Animal Guard for 4" Hooded Vent profile
vent-small-animal-guard-4inSmall Animal Guard for 4" Hooded Vent

#1139. 1 pc/box.

Item ##1139
pcs/Box1
Mount Blocks & Utility Vents - Master Exhaust Vent profile
vent-master-exhaustMaster Exhaust Vent

Scalloped: #1124 · Square: #1119. 4 pcs/box.

Item ##1124 (Scalloped) · #1119 (Square)
pcs/Box4
Locking Positions0.75" · 1.00" · 1.25"
Mount Blocks & Utility Vents - Small Animal Guard for Master Exhaust Vent profile
vent-small-animal-guard-masterSmall Animal Guard for Master Exhaust Vent

Use in place of the trim ring. Order in addition to the Master Exhaust Vent. #1138. 1 pc/box. Special Order.

Item ##1138
pcs/Box1
NotesSpecial Order · Use in place of trim ring · Order in addition to Master Exhaust Vent
Mount Blocks & Utility Vents - Master Intake / Exhaust Vent profile
vent-master-intake-exhaustMaster Intake / Exhaust Vent

Full fiberglass screening. Not for use as a dryer or furnace vent. Snap-in Modular Vent Tube adjusts from 1-1/2" to 8" and comes with 4"–3" reducer. 12 sq.ft. net free area. #1149. 1 pc/box.

Item ##1149
pcs/Box1
Locking Positions0.625" · 1.00" · 1.25"
Net Free Area12 sq.ft.
NotesFull fiberglass screening · Not for dryer/furnace vent · Vent tube adjusts 1-1/2"–8", incl. 4"–3" reducer
Mount Blocks & Utility Vents - Foundation Master – New Construction profile
vent-foundation-master-new-constructionFoundation Master – New Construction

Patented flange inserts into block. Molded-in screen for insect protection. 50 sq.ft. net free area. #5188. 10 pcs/box. Special Order.

Item ##5188
pcs/Box10
Net Free Area50 sq.ft.
NotesSpecial Order · Patented flange inserts into block · Molded-in screen for insect protection
Mount Blocks & Utility Vents - Foundation Master – Lock-On Trim Ring profile
vent-foundation-master-trim-ringFoundation Master – Lock-On Trim Ring

For remodeling. Molded-in screen for insect protection. 50 sq.ft. net free area. #5088. 1 pc/box.

Item ##5088
pcs/Box1
Locking Positions0.75" · 1.00" · 1.25"
Net Free Area50 sq.ft.
NotesFor remodeling · Molded-in screen for insect protection
Mount Blocks & Utility Vents - Foundation Master – Fixed Louver profile
vent-foundation-master-fixed-louverFoundation Master – Fixed Louver

Molded-in screen for insect protection. 50 sq.ft. net free area. #5189. 10 pcs/box. Special Order.

Item ##5189
pcs/Box10
Net Free Area50 sq.ft.
NotesSpecial Order · Molded-in screen for insect protection

Installation Guide

  1. Conceal the cut edges of siding for a finished, professional look while eliminating moisture and air infiltration.

  2. Available in all Kaycan siding colours — distinctive style and matching colours for a seamless look.

  3. Special Order items: contact your local Kaycan distribution centre for availability and lead times.

  4. Locking positions allow secure attachment at varying siding thicknesses.

  5. For dryer or furnace venting, use a dedicated hooded vent — the Master Intake/Exhaust Vent (#1149) is not suitable for dryer or furnace vent applications.

  6. For insulated siding installations, use the dedicated insulated siding series (#5681, #5684, #5687, #5688, #5689).

  7. For composite siding and water management applications, use the dedicated composite siding series (#5682, #5683, #5686).

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Mount Blocks & Utility Vents | Industry Standard Exterior Fixture Mounting | Kaycan | Pro Materials