Roof Blocks | McMaster-Carr

	Length Length

	Height Height

	Width Width

	Strut Length Strut Length

	Capacity Capacity

3,000 lbs. or greater

	Strut Material Strut Material

Aluminum

Steel

	Base Length Base Length

	For Pipe Size For Pipe Size

1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12
14
16

	Strut Height Strut Height

13/16"

1 5/8"

	Base Material Base Material

Rubber

Plastic

	Mount Type Mount Type

Freestanding

Bolt On

	Maximum Temperature Maximum Temperature

180° F

400° F

Not Rated

	Minimum Temperature Minimum Temperature

	Base Width Base Width

10"

	Number of Bases Number of Bases

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	For OD For OD

	For Rigid Conduit Trade Size For Rigid Conduit Trade Size

	For EMT Conduit Trade Size For EMT Conduit Trade Size

	For IMC Conduit Trade Size For IMC Conduit Trade Size

	Base Thickness Base Thickness

2 1/2"

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21 Products

Floor-Mount Strut-Style Supports

Reduce noise caused by HVAC systems. These sturdy rubber supports isolate vibration caused by heat pumps and air conditioning units, resulting in a quieter facility. When used on roofs, they also keep components above puddled water, which can cause damage. Supports have integrated strut channel that works with strut fittings and strut-mount routing clamps to organize and secure duct, pipe, tubing, and conduit.

Style A supports have a 1-5/8" wide strut channel for use with strut-mount clamps.

Style B supports have a roller that allows pipe and duct to move—good for HVAC systems where vibration is present.

Style C supports have two bases for additional stability and a 1-5/8" wide strut channel for use with strut-mount clamps.

	ID							Strut			Base
Style	Inch	Metric, mm	For Pipe Size	Cap., lbs.	Lg.	Wd.	Ht.	Lg.	Wd.	Ht.	No. of	Material	Color	Lg.	Wd.	Temp. Range	Features		Each
Aluminum
A	__	__	__	350	10"	6"	3 1/2"	10"	1 5/8"	1 5/8"	1	Rubber	Black	10"	6"	-40° F to 180° F	Bubble Level	0000000	000000
A	__	__	__	570	18"	6"	3 1/2"	18"	1 5/8"	1 5/8"	1	Rubber	Black	18"	6"	-40° F to 180° F	Bubble Level	0000000	00000
A	__	__	__	1,050	23"	6"	3 1/2"	24"	1 5/8"	1 5/8"	1	Rubber	Black	23"	6"	-40° F to 180° F	Bubble Level	0000000	00000
A	__	__	__	1,400	39"	6"	3 1/2"	39"	1 5/8"	1 5/8"	1	Rubber	Black	39"	6"	-40° F to 180° F	Bubble Level	0000000	00000
Galvanized Steel
B	1 5/16" 1 21/32" 1 29/32" 2 3/8"	33 mm 42 mm 48 mm 60 mm	1 1 1/4 1 1/2 2	2,500	10 1/2"	5"	8"	9 3/8"	1 5/8"	1 5/8"	1	Rubber	Black	10 1/2"	5"	Not Rated	Pipe Roller	0000000	00000
B	2 3/8" 2 7/8" 3 1/2" 4"	60 73 89 102	2 2 1/2 3 3 1/2	2,500	10 1/2"	5"	8"	9 3/8"	1 5/8"	1 5/8"	1	Rubber	Black	10 1/2"	5"	Not Rated	Pipe Roller	0000000	000000
B	4 1/2" 5 9/16" 6 5/8"	114 141 168	4 5 6	2,500	10 1/2"	5"	8 1/8"	9 3/8"	1 5/8"	1 5/8"	1	Rubber	Black	10 1/2"	5"	Not Rated	Pipe Roller	0000000	000000
C	__	__	__	1,500	30 5/8"	10 1/2"	10"	24"	1 5/8"	1 5/8"	2	Rubber	Black	10 1/2"	5"	Not Rated	__	0000000	000000
C	__	__	__	3,000	18 5/8"	10 1/2"	10"	12"	1 5/8"	1 5/8"	2	Rubber	Black	10 1/2"	5"	Not Rated	__	0000000	000000

Roller Supports

Support lines that expand and contract. The roller on these supports compensates for movement in your line from changing temperatures. Often used outdoors, these supports are galvanized steel to resist corrosion in wet environments. Bolt them to the floor, beams, or brackets. They can also be welded into place.

For technical drawings and 3-D models, click on a part number.

For OD								Mounting Hole			Thread
Inch	Metric, mm	For Pipe Size	Cap., lbs.	Lg.	Wd.	Ht.	Roller Material	Ctr.-to-Ctr.	No. of (Dia.)	Mounting Hardware Included	Size	Lg.	Temp. Range, °F		Each
Galvanized Steel
2 1/2"	64	2	600	4"	1 1/4"	1 1/2"	Galvanized Cast Iron	1 1/4"	2 (3/8")	Yes	3/8"-16	1 1/2"	-20° to 400°	0000000	000000
3 5/8"	92	3	700	5 3/8"	1 1/4"	1 3/4"	Galvanized Cast Iron	2"	2 (3/8")	Yes	3/8"-16	1 1/2"	-20° to 400°	0000000	00000
4 5/8"	117	4	750	6 5/8"	1 1/2"	2 5/16"	Galvanized Cast Iron	2"	2 (1/2")	Yes	1/2"-13	1 1/2"	-20° to 400°	0000000	00000
6 3/4"	171	6	1,070	9 1/4"	2"	2 3/4"	Galvanized Cast Iron	3 1/8"	2 (1/2")	Yes	1/2"-13	1 1/2"	-20° to 400°	0000000	00000
8 3/4"	222	8	1,350	11 5/8"	2"	3"	Galvanized Cast Iron	3 3/8"	2 (5/8")	Yes	5/8"-11	1 1/2"	-20° to 400°	0000000	000000
11"	279	10	1,730	14 3/8"	2"	3 5/8"	Galvanized Cast Iron	5 1/4"	2 (5/8")	Yes	5/8"-11	2"	-20° to 400°	0000000	000000
12 7/8"	327	12	2,400	16 1/8"	2"	4 1/8"	Galvanized Cast Iron	5 1/2"	2 (5/8")	Yes	5/8"-11	2"	-20° to 400°	0000000	000000
14 1/4"	362	14	3,130	18 3/4"	2 1/2"	4 11/16"	Galvanized Cast Iron	6 1/2"	2 (3/4")	Yes	3/4"-10	2"	-20° to 400°	0000000	000000
16 1/4"	413	16	3,970	21"	3"	5 3/8"	Galvanized Cast Iron	8 1/4"	2 (3/4")	Yes	3/4"-10	2 1/2"	-20° to 400°	0000000	000000

Adjustable-Height Floor-Mount Strut-Style Supports

With Strut Channel

With Strut Channel and Loop Hanger

Adjust supports to the exact height you need to route pipe, conduit, and tubing through strut-mount routing clamps and hangers. The wide base provides stability without needing to permanently secure to the floor. Supports have a 1-5/8" wide strut channel for use with strut-mount clamps and hangers.

Use supports with strut channel and loop hanger to suspend material such as pipe, tube, and conduit.

For technical drawings and 3-D models, click on a part number.

For OD		For Max. OD					Strut			Base
Inch	Metric, mm	Inch	Metric, mm	For Pipe Size	Cap., lbs.	Clearance	Lg.	Wd.	Ht.	Material	Color	Lg.	Wd.	Thick.	Temp. Range, °F		Each
Galvanized Steel
Strut Channel
__	__	3"	76	1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2	100	3 1/2" - 10"	8"	1 5/8"	13/16"	Plastic	Black	8"	10"	2 1/2"	-30° to 180°	0000000	000000
__	__	4 1/8"	104	1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2	150	4 1/2" - 12"	12"	1 5/8"	13/16"	Plastic	Black	16"	10"	3"	-30° to 180°	0000000	00000
Strut Channel and Loop Hanger
3"	76	__	__	2 1/2	150	3" - 6"	12"	1 5/8"	13/16"	Plastic	Black	16"	10"	3"	-30° to 180°	0000000	00000