We only ship within the United States
Your Zip:
Enter a US zip code
HELP
MENU
CONTACT & SUPPORT
Live Chat Offline:
Email Us
SIGN IN
0
CART
×
SIGN IN
Shop by Category
Plumbing
Heating
HVAC
Electrical
PEX
Fittings
Valves
Tools
Resources
Our Team
Account
Order History
Returns
Customer Support
Give Us Feedback
Tools
Reorder
Quick Order
Saved Carts
Lists
Resources
PEX Plumbing
PEX Tools
Radiant Heat
Boiler Room
Plumbing Supplies
Air Conditioning
Video Library
Project Calculators
Find Parts For Your Unit
Filters
Hide Filters
5 items
Reset
SORT
Top Sellers
Default
Price ▲
Price ▼
Product Availability
–
Show In Stock Only</strong> Filter (1)
Show
In Stock Only
(1)
Nominal Penetrant Size
–
1" - 2" Filter (1)
1" - 2" (1)
1-1/4" - 3" Filter (1)
1-1/4" - 3" (1)
1/4" - 1-1/4" Filter (1)
1/4" - 1-1/4" (1)
2-1/2" - 4" Filter (1)
2-1/2" - 4" (1)
4" - 6" Filter (1)
4" - 6" (1)
Price Range
–
$1 to $5 Filter (1)
$1 to $5 (1)
$5 to $10 Filter (3)
$5 to $10 (3)
$10 to $15 Filter (1)
$10 to $15 (1)
Home
Plumbing Supplies
Firestop Products
Extension Sleeves
Extension Sleeves
Need a little help?
View our Resources
5 items
FILTER
Grid
List
Sort: Default
Resources
Articles
More About Extension Sleeves
–
This category contains extension sleeves that extend the height of firestop and hollow sleeves by as much as 43/4 in 1/4” increments.
Questions?
Closed Now:
Hours
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
Available
9am
Available
9am
Available
9am
Response
by Tue
or check out our
Support Center
HFPE1 Compare Checkbox
Compare
1/4"-1-1/4" Extension Sleeve for #1 Firestop Sleeve & #2 Hollow Sleeve
SKU:
HFPE1
Holdrite
SKU:
HFPE1
Brand:
Holdrite
–
+
$4.74
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Add to List
HFPE2 Compare Checkbox
Compare
1"-2" Extension Sleeve for #2 Firestop Sleeve and #3 Hollow Sleeve
SKU:
HFPE2
Holdrite
SKU:
HFPE2
Brand:
Holdrite
–
+
$5.50
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Add to List
HFPE3 Compare Checkbox
Compare
1-1/4"-3" Extension Sleeve for #3 Firestop Sleeve & #4 Hollow Sleeve
SKU:
HFPE3
Holdrite
SKU:
HFPE3
Brand:
Holdrite
–
+
$6.12
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Add to List
HFPE4 Compare Checkbox
Compare
2-1/2"-4" Extension Sleeve for #4 Firestop Sleeve & #5 Hollow Sleeve
SKU:
HFPE4
Holdrite
SKU:
HFPE4
Brand:
Holdrite
–
+
$9.38
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Dec 26
In Stock
Get 1 by
Thu, Dec 26
Add to List
HFPE6 Compare Checkbox
Compare
4"-6" Extension Sleeve for #6 Firestop Sleeve & #7 Hollow Sleeve
SKU:
HFPE6
Holdrite
SKU:
HFPE6
Brand:
Holdrite
–
+
$10.98
each
BOX UP & SAVE 7%
–
+
$20.50 box of 2
$10.25
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Backorder
Get it by
Tue, Jan 28 - Tue, Feb 25
Add to List
Resources
FAQs, Manuals & Videos
Articles
More About Extension Sleeves
This category contains extension sleeves that extend the height of firestop and hollow sleeves by as much as 43/4 in 1/4” increments.
View More
Close Resources
Didn't find what you're looking for?
Let us know
.
Filter & Sort
5 items
Reset
SORT
Top Sellers
Default
Price ▲
Price ▼
Product Availability
–
Show In Stock Only</strong> Filter (1)
Show
In Stock Only
(1)
Nominal Penetrant Size
–
1" - 2" Filter (1)
1" - 2" (1)
1-1/4" - 3" Filter (1)
1-1/4" - 3" (1)
1/4" - 1-1/4" Filter (1)
1/4" - 1-1/4" (1)
2-1/2" - 4" Filter (1)
2-1/2" - 4" (1)
4" - 6" Filter (1)
4" - 6" (1)
Price Range
–
$1 to $5 Filter (1)
$1 to $5 (1)
$5 to $10 Filter (3)
$5 to $10 (3)
$10 to $15 Filter (1)
$10 to $15 (1)
Clear All
CLOSE
×
Video