4406

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4406

Steel

Surflo™ T-Bar Diffuser

Patented design; diffuses air along ceiling surface for superior distribution
1, 2, 3, 4-way or 2-way corner diffusion
R6 insulation blanket
Now available with Duct Board plenum option.
Fixed 14” collar or no collar*
Steel construction
White finish
Made in the U.S.A.

*Use Series 5400 collar for 6”-12” applications

Models

4416	1-way diffusion
4426	2-way diffusion
4436	3-way diffusion
4446	4-way diffusion
4456	2-way corner diffusion

Catalog Page Submittal SheetVideos

Part #
44 4A6
Description	4-way, No collar, R6 Ins.
Ctn Qty	2
List Price Each	--

Part #	Description	Ctn Qty	List Price Each
44 4A6	4-way, No collar, R6 Ins.	2	--

Collar Size
For Models 4426, 4436, 4446
Neck Velocity
250
350
450
550
650
750
850
1000
1200
6
Ak .43"
Neck Velocity	Cfm
250	50
350	65
450	85
550	105
650	125
750	145
850	165
1000	195
1200	235

Neck Velocity	Ps
250	<.01
350	<.01
450	0.014
550	0.021
650	0.029
750	0.036
850	0.046
1000	0.065
1200	0.094

Neck Velocity	Nc
250	< 20
350	<20
450	<20
550	<20
650	<20
750	23
850	27
1000	31
1200	35

Neck Velocity	Throw (442)
250	4
350	5
450	6.5
550	8
650	10
750	11
850	13
1000	15
1200	17

Neck Velocity	Throw (443)
250	3/4
350	3.5/5
450	4.5/6.5
550	6/8
650	7.5/10
750	8/11
850	9/13
1000	11/15
1200	12/17

Neck Velocity	Throw (444)
250	3
350	3.5
450	4.5
550	6
650	7.5
750	8
850	9
1000	11
1200	12
7
Ak .48"
Neck Velocity	Cfm
250	70
350	95
450	115
550	140
650	175
750	195
850	230
1000	265
1200	305

Neck Velocity	Ps
250	<.01
350	0.011
450	0.016
550	0.025
650	0.034
750	0.045
850	0.058
1000	0.081
1200	0.117

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	<20
650	17
750	21
850	25
1000	28
1200	30

Neck Velocity	Throw (442)
250	4.5
350	6.5
450	8
550	9
650	11
750	13
850	16
1000	17
1200	20

Neck Velocity	Throw (443)
250	3.5/4.5
350	4.5/6.5
450	5.5/8
550	6.5/9
650	8/11
750	9/13
850	11/16
1000	12/17
1200	14/20

Neck Velocity	Throw (444)
250	3.5
350	4.5
450	5.5
550	6.5
650	8
750	9
850	11
1000	12
1200	14
8
Ak .53"
Neck Velocity	Cfm
250	90
350	115
450	155
550	195
650	230
750	265
850	300
1000	350
1200	410

Neck Velocity	Ps
250	<.01
350	0.012
450	0.019
550	0.029
650	0.040
750	0.054
850	0.070
1000	0.098
1200	0.140

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	<20
650	21
750	26
850	31
1000	34
1200	37

Neck Velocity	Throw (442)
250	5.5
350	7
450	9
550	11
650	14
750	16
850	19
1000	21
1200	23

Neck Velocity	Throw (443)
250	4.5/5
350	5/7
450	6.5/9
550	8/11
650	9.5/14
750	11/16
850	13/19
1000	15/21
1200	17/23

Neck Velocity	Throw (444)
250	4
350	5
450	6.5
550	8
650	9.5
750	11
850	13
1000	15
1200	17
9
Ak .575"
Neck Velocity	Cfm
250	110
350	155
450	200
550	245
650	290
750	340
850	380
1000	440
1200	540

Neck Velocity	Ps
250	<.01
350	0.014
450	0.023
550	0.036
650	0.051
750	0.066
850	0.086
1000	0.119
1200	0.172

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	<20
650	26
750	31
850	33
1000	37
1200	40

Neck Velocity	Throw (442)
250	5.5
350	8
450	11
550	13
650	15
750	18
850	20
1000	23
1200	25

Neck Velocity	Throw (443)
250	4.5/5
350	6/9
450	7.5/11
550	9/13
650	11/15
750	13/18
850	14/20
1000	16/23
1200	18/25

Neck Velocity	Throw (444)
250	4
350	6
450	7.5
550	9
650	11
750	13
850	14
1000	16
1200	18
10
Ak .62"
Neck Velocity	Cfm
250	135
350	190
450	245
550	300
650	355
750	400
850	460
1000	540
1200	660

Neck Velocity	Ps
250	<.01
350	0.014
450	0.023
550	0.036
650	0.051
750	0.066
850	0.086
1000	0.119
1200	0.172

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	22
650	29
750	35
850	38
1000	42
1200	>45

Neck Velocity	Throw (442)
250	6
350	8
450	11
550	14
650	17
750	19
850	21
1000	25
1200	26

Neck Velocity	Throw (443)
250	4/6
350	6/8
450	8/11
550	10/14
650	12/17
750	13/19
850	15/21
1000	18/25
1200	19/26

Neck Velocity	Throw (444)
250	4
350	6
450	8
550	10
650	12
750	13
850	15
1000	18
1200	19
12
Ak .70"
Neck Velocity	Cfm
250	180
350	275
450	350
550	430
650	510
750	580
850	650
1000	780
1200	920

Neck Velocity	Ps
250	0.012
350	0.024
450	0.040
550	0.059
650	0.082
750	0.110
850	0.142
1000	0.195
1200	0.275

Neck Velocity	Nc
250	<20
350	<20
450	22
550	28
650	35
750	39
850	44
1000	>45
1200	>45

Neck Velocity	Throw (442)
250	8.5
350	11
450	14
550	17
650	19
750	23
850	25
1000	26
1200	27

Neck Velocity	Throw (443)
250	5/8.5
350	7.5/11
450	10/14
550	12/17
650	14/19
750	16/23
850	18/25
1000	19/26
1200	20/27

Neck Velocity	Throw (444)
250	35
350	7.5
450	10
550	11.5
650	14
750	16
850	18
1000	19
1200	20
14
Ak .75"
Neck Velocity	Cfm
250	275
350	380
450	490
550	600
650	700
750	805
850	910
1000	1075
1200	1300

Neck Velocity	Ps
250	0.015
350	0.031
450	0.050
550	0.075
650	0.105
750	0.137
850	0.177
1000	0.245
1200	0.350

Neck Velocity	Nc
250	<20
350	21
450	27
550	31
650	36
750	40
850	45
1000	>45
1200	>45

Neck Velocity	Throw (442)
250	8.5
350	13
450	16
550	20
650	24
750	26
850	27
1000	28
1200	29

Neck Velocity	Throw (443)
250	6/8.5
350	9/13
450	11/16
550	14/20
650	17/24
750	19/26
850	20/27
1000	22/28
1200	24/29

Neck Velocity	Throw (444)
250	6
350	9
450	11
550	14
650	17
750	19
850	20
1000	22
1200	24

Neck Velocity
250
350
450
550
650
750
850
1000
1200
Collar Size
Neck Velocity	Neck Velocity
250	250
350	350
450	450
550	550
650	650
750	750
850	850
1000	1000
1200	1200
For Models 4416, 4456
Neck Velocity
250
350
450
550
650
750
850
1000
1200
6
Ak .43"
Neck Velocity	Cfm
250	50
350	65
450	85
550	105
650	125
750	145
850	165
1000	195
1200	235

Neck Velocity	Ps
250	<.01
350	<.01
450	0.014
550	0.021
650	0.029
750	0.036
850	0.046
1000	0.065
1200	0.094

Neck Velocity	Nc
250	< 20
350	<20
450	<20
550	<20
650	<20
750	23
850	27
1000	31
1200	35

Neck Velocity	Throw (441)
250	5.5
350	7
450	9.5
550	11
650	14
750	16
850	18
1000	22
1200	24

Neck Velocity	Throw (445)
250	4
350	5
450	6.5
550	8
650	10
750	11
850	13
1000	15
1200	17
7
Ak .48"
Neck Velocity	Cfm
250	70
350	95
450	120
550	150
650	180
750	205
850	230
1000	270
1200	310

Neck Velocity	Ps
250	<.01
350	0.011
450	0.016
550	0.025
650	0.034
750	0.045
850	0.058
1000	0.081
1200	0.117

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	<20
650	<20
750	24
850	28
1000	30
1200	33

Neck Velocity	Throw (441)
250	6.5
350	8.5
450	11
550	15
650	17
750	19
850	22
1000	24
1200	26

Neck Velocity	Throw (445)
250	4.5
350	6
450	8
550	10
650	12
750	13
850	16
1000	17
1200	19
8
Ak .53"
Neck Velocity	Cfm
250	85
350	120
450	150
550	190
650	220
750	260
850	300
1000	350
1200	410

Neck Velocity	Ps
250	<.01
350	0.012
450	0.019
550	0.029
650	0.040
750	0.054
850	0.070
1000	0.098
1200	0.140

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	<20
650	21
750	26
850	31
1000	34
1200	37

Neck Velocity	Throw (441)
250	7
350	10
450	13
550	16
650	18
750	21
850	25
1000	29
1200	31

Neck Velocity	Throw (445)
250	5
350	7
450	9.5
550	12
650	13
750	15
850	18
1000	21
1200	23
9
Ak .575"
Neck Velocity	Cfm
250	110
350	155
450	200
550	245
650	295
750	330
850	365
1000	450
1200	550

Neck Velocity	Ps
250	<.01
350	0.014
450	0.023
550	0.036
650	0.051
750	0.066
850	0.086
1000	0.119
1200	0.172

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	<20
650	26
750	31
850	33
1000	37
1200	41

Neck Velocity	Throw (441)
250	6
350	10
450	14
550	18
650	22
750	24
850	27
1000	29
1200	31

Neck Velocity	Throw (445)
250	7
350	7.5
450	10
550	13
650	16
750	17
850	19
1000	20
1200	22
10
Ak .62"
Neck Velocity	Cfm
250	140
350	180
450	245
550	300
650	360
750	410
850	450
1000	550
1200	650

Neck Velocity	Ps
250	<.01
350	0.017
450	0.028
550	0.043
650	0.069
750	0.078
850	0.102
1000	0.140
1200	0.205

Neck Velocity	Nc
250	<20
350	<20
450	<20
550	22
650	29
750	35
850	38
1000	42
1200	>45

Neck Velocity	Throw (441)
250	9
350	12
450	16
550	20
650	24
750	27
850	30
1000	32
1200	34

Neck Velocity	Throw (445)
250	6.5
350	9
450	11
550	14
650	17
750	19
850	21
1000	23
1200	24
12
Ak .70"
Neck Velocity	Cfm
250	190
350	245
450	350
550	450
650	530
750	590
850	660
1000	780
1200	920

Neck Velocity	Ps
250	0.012
350	0.024
450	0.040
550	0.059
650	0.082
750	0.110
850	0.142
1000	0.195
1200	0.275

Neck Velocity	Nc
250	<20
350	<20
450	22
550	28
650	35
750	39
850	44
1000	>45
1200	>45

Neck Velocity	Throw (441)
250	10
350	13
450	19
550	25
650	30
750	32
850	33
1000	34
1200	34

Neck Velocity	Throw (445)
250	7.5
350	9
450	14
550	17
650	21
750	23
850	24
1000	25
1200	26
14
Ak .75"
Neck Velocity	Cfm
250	285
350	375
450	480
550	590
650	695
750	800
850	900
1000	1075
1200	1275

Neck Velocity	Ps
250	0.015
350	0.031
450	0.050
550	0.075
650	0.105
750	0.137
850	0.177
1000	0.245
1200	0.350

Neck Velocity	Nc
250	<20
350	21
450	27
550	31
650	36
750	40
850	45
1000	>45
1200	>45

Neck Velocity	Throw (441)
250	8
350	13
450	22
550	26
650	28
750	30
850	31
1000	32
1200	33

Neck Velocity	Throw (445)
250	6
350	10
450	16
550	20
650	22
750	24
850	26
1000	28
1200	30

Collar Size	Neck Velocity	250	350	450	550	650	750	850	1000	1200
For Models 4426, 4436, 4446
6
Ak .43"	Cfm	50	65	85	105	125	145	165	195	235
	Ps	<.01	<.01	0.014	0.021	0.029	0.036	0.046	0.065	0.094
	Nc	< 20	<20	<20	<20	<20	23	27	31	35
	Throw (442)	4	5	6.5	8	10	11	13	15	17
	Throw (443)	3/4	3.5/5	4.5/6.5	6/8	7.5/10	8/11	9/13	11/15	12/17
	Throw (444)	3	3.5	4.5	6	7.5	8	9	11	12
7
Ak .48"	Cfm	70	95	115	140	175	195	230	265	305
	Ps	<.01	0.011	0.016	0.025	0.034	0.045	0.058	0.081	0.117
	Nc	<20	<20	<20	<20	17	21	25	28	30
	Throw (442)	4.5	6.5	8	9	11	13	16	17	20
	Throw (443)	3.5/4.5	4.5/6.5	5.5/8	6.5/9	8/11	9/13	11/16	12/17	14/20
	Throw (444)	3.5	4.5	5.5	6.5	8	9	11	12	14
8
Ak .53"	Cfm	90	115	155	195	230	265	300	350	410
	Ps	<.01	0.012	0.019	0.029	0.040	0.054	0.070	0.098	0.140
	Nc	<20	<20	<20	<20	21	26	31	34	37
	Throw (442)	5.5	7	9	11	14	16	19	21	23
	Throw (443)	4.5/5	5/7	6.5/9	8/11	9.5/14	11/16	13/19	15/21	17/23
	Throw (444)	4	5	6.5	8	9.5	11	13	15	17
9
Ak .575"	Cfm	110	155	200	245	290	340	380	440	540
	Ps	<.01	0.014	0.023	0.036	0.051	0.066	0.086	0.119	0.172
	Nc	<20	<20	<20	<20	26	31	33	37	40
	Throw (442)	5.5	8	11	13	15	18	20	23	25
	Throw (443)	4.5/5	6/9	7.5/11	9/13	11/15	13/18	14/20	16/23	18/25
	Throw (444)	4	6	7.5	9	11	13	14	16	18
10
Ak .62"	Cfm	135	190	245	300	355	400	460	540	660
	Ps	<.01	0.014	0.023	0.036	0.051	0.066	0.086	0.119	0.172
	Nc	<20	<20	<20	22	29	35	38	42	>45
	Throw (442)	6	8	11	14	17	19	21	25	26
	Throw (443)	4/6	6/8	8/11	10/14	12/17	13/19	15/21	18/25	19/26
	Throw (444)	4	6	8	10	12	13	15	18	19
12
Ak .70"	Cfm	180	275	350	430	510	580	650	780	920
	Ps	0.012	0.024	0.040	0.059	0.082	0.110	0.142	0.195	0.275
	Nc	<20	<20	22	28	35	39	44	>45	>45
	Throw (442)	8.5	11	14	17	19	23	25	26	27
	Throw (443)	5/8.5	7.5/11	10/14	12/17	14/19	16/23	18/25	19/26	20/27
	Throw (444)	35	7.5	10	11.5	14	16	18	19	20
14
Ak .75"	Cfm	275	380	490	600	700	805	910	1075	1300
	Ps	0.015	0.031	0.050	0.075	0.105	0.137	0.177	0.245	0.350
	Nc	<20	21	27	31	36	40	45	>45	>45
	Throw (442)	8.5	13	16	20	24	26	27	28	29
	Throw (443)	6/8.5	9/13	11/16	14/20	17/24	19/26	20/27	22/28	24/29
	Throw (444)	6	9	11	14	17	19	20	22	24

Collar Size	Neck Velocity	250	350	450	550	650	750	850	1000	1200
For Models 4416, 4456
6
Ak .43"	Cfm	50	65	85	105	125	145	165	195	235
	Ps	<.01	<.01	0.014	0.021	0.029	0.036	0.046	0.065	0.094
	Nc	< 20	<20	<20	<20	<20	23	27	31	35
	Throw (441)	5.5	7	9.5	11	14	16	18	22	24
	Throw (445)	4	5	6.5	8	10	11	13	15	17
7
Ak .48"	Cfm	70	95	120	150	180	205	230	270	310
	Ps	<.01	0.011	0.016	0.025	0.034	0.045	0.058	0.081	0.117
	Nc	<20	<20	<20	<20	<20	24	28	30	33
	Throw (441)	6.5	8.5	11	15	17	19	22	24	26
	Throw (445)	4.5	6	8	10	12	13	16	17	19
8
Ak .53"	Cfm	85	120	150	190	220	260	300	350	410
	Ps	<.01	0.012	0.019	0.029	0.040	0.054	0.070	0.098	0.140
	Nc	<20	<20	<20	<20	21	26	31	34	37
	Throw (441)	7	10	13	16	18	21	25	29	31
	Throw (445)	5	7	9.5	12	13	15	18	21	23
9
Ak .575"	Cfm	110	155	200	245	295	330	365	450	550
	Ps	<.01	0.014	0.023	0.036	0.051	0.066	0.086	0.119	0.172
	Nc	<20	<20	<20	<20	26	31	33	37	41
	Throw (441)	6	10	14	18	22	24	27	29	31
	Throw (445)	7	7.5	10	13	16	17	19	20	22
10
Ak .62"	Cfm	140	180	245	300	360	410	450	550	650
	Ps	<.01	0.017	0.028	0.043	0.069	0.078	0.102	0.140	0.205
	Nc	<20	<20	<20	22	29	35	38	42	>45
	Throw (441)	9	12	16	20	24	27	30	32	34
	Throw (445)	6.5	9	11	14	17	19	21	23	24
12
Ak .70"	Cfm	190	245	350	450	530	590	660	780	920
	Ps	0.012	0.024	0.040	0.059	0.082	0.110	0.142	0.195	0.275
	Nc	<20	<20	22	28	35	39	44	>45	>45
	Throw (441)	10	13	19	25	30	32	33	34	34
	Throw (445)	7.5	9	14	17	21	23	24	25	26
14
Ak .75"	Cfm	285	375	480	590	695	800	900	1075	1275
	Ps	0.015	0.031	0.050	0.075	0.105	0.137	0.177	0.245	0.350
	Nc	<20	21	27	31	36	40	45	>45	>45
	Throw (441)	8	13	22	26	28	30	31	32	33
	Throw (445)	6	10	16	20	22	24	26	28	30

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