McMaster-Carr

Choose a Category

	Maximum Temperature Maximum Temperature

250° F

350° F

	Minimum Temperature Minimum Temperature

	Thickness Thickness

	Width Width

	Length Length

	Flexibility Flexibility

Flexible

Semi-Rigid

Rigid

	For Use On For Use On

Enclosures and Equipment

	Material Material

Fiberglass

Fabric

	R Value R Value

	Color Color

	Gray		Green
	White		Yellow
	Gold		Brown

	Heat Flow Rate Heat Flow Rate

	Density Density

	Specifications Met Specifications Met

ASTM

	Facing Material Facing Material

Foil

Paper

Aluminum

Plastic

	Facing Color Facing Color

	Silver
	White
	Beige

	Minimum Facing Temperature Minimum Facing Temperature

-40° F

0° F

	Reinforcement Location Reinforcement Location

One Side

Two Sides

View catalog pages (4)

Forward

How can we improve?

73 Products

About Selecting Thermal Insulation

These lightweight, flexible fiberglass sheets are typically used to insulate equipment and appliances.

For Enclosures and Equipment

Temperature Range: 0° to 350° F
Heat Flow Rate: 0.26 Btu @ 75° F
Density: 0.95 lbs./cu. ft.
Color: Yellow
Specifications Met: ASTM E84 25/50 for Flame and Smoke

Sheets with temperature range of 0° to 350° F can be layered to increase efficiency.

Thick.	Wd.	Lg., ft.	R Value	Flexibility		Each
1"	48"	10	3.8	Flexible	0000000	000000
2"	48"	10	7.7	Flexible	0000000	00000
2"	48"	100	7.7	Flexible	0000000	000000
3 1/2"	48"	10	3.8	Flexible	0000000	00000
3 1/2"	48"	72	3.8	Flexible	0000000	000000

For Enclosures and Equipment/Ovens and Furnaces

Temperature Range: 0° to 1000° F
Heat Flow Rate: 0.26 Btu @ 75° F
Density: 2.4 lbs./cu. ft.
Color: Gray
Specifications Met: ASTM E84 25/50 for Flame and Smoke

Sheets with temperature range of 0° to 1000° F are suitable for use in ovens. To use outdoors, add metal jacketing (sold separately).

Thick.	Wd.	Lg., ft.	R Value	Flexibility		Each
1"	24"	8	3.8	Flexible	0000000	000000
1 1/2"	24"	8	5.8	Flexible	0000000	00000
2"	24"	8	7.7	Flexible	0000000	00000

Rigid Mineral Wool Insulation Sheets

Without Reinforcement

With Wire-Mesh Reinforcement

Temperature Range: 0° to 1200° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: 8 lbs./cu. ft.
Color: Green
Specifications Met:
Sheets: ASTM E84 25/50 for Flame and Smoke;
Sheets with Wire Mesh Reinforcement: ASTM E84 0/0 for Flame and Smoke

These durable sheets resist compression and are often used in oven and power-generating applications. To use outdoors, add metal jacketing.

Sheets with wire-mesh reinforcement withstand extreme shock and vibration.

Flame-resistant sheets meet ASTM E84 0/0 for flame and smoke.

Sheets
Thick.	Wd.	Lg., ft.	R Value	Flexibility	Performance Properties		Each
1"	24"	4	4.3	Semi-Rigid	__	0000000	00000
1 1/2"	24"	4	6.5	Semi-Rigid	__	0000000	00000
2"	24"	4	8.7	Semi-Rigid	__	0000000	00000
Sheets with Wire Mesh Reinforcement on One Side
1"	24"	4	4.3	Semi-Rigid	Flame Resistant	0000000	00000
1 1/2"	24"	4	6.5	Semi-Rigid	Flame Resistant	0000000	00000
2"	24"	4	8.7	Semi-Rigid	Flame Resistant	0000000	00000
Sheets with Wire Mesh Reinforcement on Two Sides
1"	24"	4	4.3	Semi-Rigid	Flame Resistant	0000000	00000
1 1/2"	24"	4	6.5	Semi-Rigid	Flame Resistant	0000000	00000
2"	24"	4	8.7	Semi-Rigid	Flame Resistant	0000000	00000

Thermally Stable Composite Paper Insulation Sheets

Max. Temperature: 1100° F
Heat Flow Rate: 0.22 Btu @ 75° F
Density: 8.7 lbs./cu. ft.
Color: White
Specifications Met: UL 94V0

Made of flexible composite paper, these sheets won't shrink or lose shape in the high temperatures of air furnaces and hot water tanks.

5 ft.
Thick.	Wd.	R Value	Flexibility		Each
1/8"	16"	0.6	Flexible	0000000	000000
1/8"	24"	0.6	Flexible	0000000	00000
1/8"	48"	0.6	Flexible	0000000	00000
10 ft.
1/8"	16"	0.6	Flexible	0000000	00000
1/8"	24"	0.6	Flexible	0000000	00000
1/8"	48"	0.6	Flexible	0000000	000000
20 ft.
1/8"	16"	0.6	Flexible	0000000	00000
1/8"	24"	0.6	Flexible	0000000	000000
1/8"	48"	0.6	Flexible	0000000	000000

Fiberglass Pipe Insulation

This common insulation material is typically used on hot and cold water lines and in process piping. To use outdoors, add metal jacketing.

Sheets/strips with foil facing reflect heat away from pipe. The foil facing is also known as FSK. Seal with reinforced HVAC tape (sold separately).

Sheets/strips with kraft paper facing have an all-service jacket (ASJ) made of kraft paper. Seal with reinforced insulation tape (sold separately).

Sheets/Strips with Foil Facing

Sheet/Strip with Foil Facing

Temperature Range: -60° to 450° F
Facing Temperature Range: -40° to 150° F
Heat Flow Rate: 0.27 Btu @ 75° F
Density: 3 lbs./cu. ft.
Color: Yellow
Facing Color: Silver

Thick.	Wd.	Lg., ft.	R Value	Flexibility		Each
1"	36"	20	3.7	Flexible	0000000	0000000
1 1/2"	36"	20	5.6	Flexible	0000000	000000
2"	36"	20	7.4	Flexible	0000000	000000

Reinforced HVAC Tape (3" × 30 ft.)

00000000

Each

00000

Sheets/Strips with Kraft Paper Facing

Sheet/Strip with Kraft Paper Facing

Temperature Range: -60° to 450° F
Facing Temperature Range: -40° to 150° F
Heat Flow Rate: 0.27 Btu @ 75° F
Density: 3 lbs./cu. ft.
Color: Yellow
Facing Color: White

Thick.	Wd.	Lg., ft.	R Value	Flexibility		Each
1"	36"	20	3.7	Flexible	0000000	0000000
1 1/2"	36"	20	5.6	Flexible	0000000	000000
2"	36"	20	7.4	Flexible	0000000	000000

Reinforced Insulation Tape (3" × 30 ft.)

00000000

Each

00000

Fiberglass Building Insulation Sheets and Strips

Also known as batts, these fiberglass sheets and strips are used to insulate walls, ceilings, and floors.

Sheets/strips with moisture barrier prevent condensation from forming. Use electrical tape to secure the ends.

Sheets/strips with kraft paper facing can be layered to increase thermal efficiency. Seal with reinforced insulation tape (sold separately).

Sheets

Without Facing or Moisture Barrier

Temperature Range: Not Rated
Heat Flow Rate: 0.32 Btu @ 75° F
Density: 0.5 lbs./cu. ft.
Color: Brown
Specifications Met: ASTM E84 25/50 for Flame and Smoke

Thick.	Wd.	Lg., ft.	R Value	Flexibility	Pkg. Qty.		Pkg.
3 1/2"	16"	8	11	Flexible	16	00000000	000000
6 1/4"	24"	4	19	Flexible	16	00000000	000000

Sheets with Moisture Barrier

With Moisture Barrier

Temperature Range: -50° to 250° F
Heat Flow Rate: 0.3 Btu @ 75° F
Density: 0.6 lbs./cu. ft.
Color: Gold
Specifications Met: ASTM E84 25/50 for Flame and Smoke

Thick.	Wd.	Lg., ft.	R Value	Flexibility		Each
1/2"	3"	35	1.7	Flexible	000000	00000
1"	3"	25	3.3	Flexible	000000	00000

Sheets with Kraft Paper Facing

With Kraft Paper Facing

Temperature Range: Not Rated
Heat Flow Rate: 0.32 Btu @ 75° F
Density: 0.5 lbs./cu. ft.
Color: Brown
Facing Color: Beige

Thick.	Wd.	Lg., ft.	R Value	Flexibility	Pkg. Qty.		Pkg.
3 1/2"	16"	8	11	Flexible	16	00000000	000000
6 1/4"	24"	4	19	Flexible	16	00000000	000000

Reinforced Insulation Tape

00000000

Each

00000

Flame-Resistant Flexible Synthetic
Fiber Duct Insulation Sheets

Max. Temperature: 1830° F
Heat Flow Rate: 1.93 Btu @ 1500° F
Density: 6 lbs./cu. ft.
Color: White
Facing Color: Silver
Specifications Met: ASTM E84 0/0 for Flame and Smoke

Also known as fire wrap, these flame-resistant sheets meet ASTM E84 0/0 for flame and smoke and create a fire barrier around rectangular and round ductwork. They are often used to wrap kitchen grease exhaust ducts and air ducts. Seal with reinforced HVAC tape (sold separately).

			25 ft. × 24"		25 ft. × 48"
Thick.	R Value	Flexibility		Each		Each
1 1/2"	6.3	Flexible	00000000	0000000	00000000	0000000

Reinforced HVAC Tape

0000000

Each

000000

Flexible Fiberglass Duct Insulation Sheets

Wrap rectangular and round ductwork with this flexible insulation. Seal with reinforced HVAC tape (not included).

Sheets with foil facing reflect heat. The foil facing is also known as foil scrim kraft (FSK).

Sheets with vinyl facing are tear resistant.

Sheets with Foil Facing

With Foil Facing

Temperature Range: 0° to 250° F
Heat Flow Rate: 0.26 Btu @ 75° F
Color: Brown
Facing Color: Silver
Specifications Met: ASTM E84 25/50 for Flame and Smoke

10 ft. × 48"
Thick.	R Value	Flexibility		Each
1 1/2"	4.5	Flexible	0000000	000000
1 1/2"	4.8	Flexible	0000000	00000
1 1/2"	5	Flexible	000000	00000
2"	5.6	Flexible	0000000	00000
2"	6	Flexible	0000000	00000
2"	6.4	Flexible	0000000	00000
2 3/16"	6	Flexible	0000000	00000
3"	8.4	Flexible	0000000	00000
50 ft. × 48"
2"	6.4	Flexible	0000000	000000
3"	8.4	Flexible	0000000	000000
75 ft. × 48"
1 1/2"	4.8	Flexible	0000000	000000
2"	5.6	Flexible	0000000	000000
2"	6	Flexible	0000000	000000
2 3/16"	6	Flexible	0000000	000000
100 ft. × 48"
1 1/2"	4.5	Flexible	0000000	000000
1 1/2"	5	Flexible	000000	000000

Reinforced HVAC Tape

00000000

Each

00000

Sheets with Vinyl Facing

With Vinyl Facing

Temperature Range: Not Rated
Heat Flow Rate: 0.26 Btu @ 75° F
Density: 0.95 lbs./cu. ft.
Color: Yellow
Facing Color: White

			10 ft. × 48"		100 ft. × 48"
Thick.	R Value	Flexibility		Each		Each
2"	7.7	Flexible	0000000	000000	0000000	0000000

Reinforced HVAC Tape

00000000

Each

00000

Rigid Fiberglass Duct Insulation Sheets

With Foil Facing

With Kraft Paper Facing

Temperature Range: 0° to 450° F
Facing Temperature Range: 0° to 150° F
Heat Flow Rate: 0.23 Btu @ 75° F
Density: See table
Color: Yellow
Facing Color:
Foil Facing: Silver;
Kraft Paper Facing: White
Specifications Met: ASTM E84 25/50 for Flame and Smoke

Insulate rectangular ductwork.

Sheets with foil facing reflect heat. The foil facing is also known as foil scrim kraft (FSK). Seal with reinforced HVAC tape (sold separately).

To seal sheets with kraft paper facing, use reinforced insulation tape (sold separately).

					Sheets with Foil Facing		Sheets with Kraft Paper Facing
Thick.	Wd.	Lg., ft.	R Value	Flexibility		Each		Each
3 lbs./cu. ft. Density
1"	24"	4	4.3	Rigid	000000	000000	000000	000000
1 1/2"	24"	4	6.5	Rigid	000000	00000	000000	00000
2"	24"	4	8.7	Rigid	000000	00000	000000	00000
6 lbs./cu. ft. Density
1"	24"	4	4.3	Rigid	000000	00000	000000	00000
1 1/2"	24"	4	6.5	Rigid	000000	00000	000000	00000
2"	24"	4	8.7	Rigid	000000	00000	000000	00000

Reinforced Insulation Tape for Sheets with Kraft Paper Facing	00000000	Each	00000
Reinforced HVAC Tape for Sheets with Foil Facing	00000000	Each	0000

Terms and Conditions and Privacy Policy