RTA Series Roof Exhausters

Belt drive, heavy duty construction ideal for industrial & commercial applications.

RTA model suitable for use in clean, dry air with a maximum ambient temperature of 93º C (200º F).
RWTA models are suitable for use in moisture laden air with a maximum ambient temperature of 93º C (200º F).
RTWA models feature a Teflon shaft seal, poly housing bearings and stainless steel insert.

TEFC, ball bearing motor is out of air stream and is accessible from the roof, maximum ambient temperature of 40º C (104º F).
Galvanized steel wind-band and rain-proof butterfly dampers.
Cast iron pillow block bearings (out of air stream), complete with external grease fittings.
Cast aluminum blades on 12” to 48” sizes.
Polypropylene blades reinforced with fiberglass on 54” to 60” sizes.
Heavy duty pulleys and belts out of air stream.

Specifications

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							CFM @ STATIC PRESSURE
		MODEL #	RPM	HP	MIN CFM	dBA @ 10 ft	0"				1/8"				1/4"				1/2"				3/4"				1"
		SINGLE PHASE	RPM	HP	MIN CFM	dBA @ 10 ft	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)
BLADE DIAMETER	18"	RTA18T10075A	1556	3/4	2600	59	2794	0.45	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA18T10075B	1785	3/4	2600	62	3203	0.68	-	-	2976	0.72	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA18T10100	1920	1	2600	64	3449	0.85	0.51	0.84	3244	0.89	0.59	0.88	2815	0.85	0.65	0.84	-	-	-	-	-	-	-	-	-	-	-	-
		RTA18T10150	2255	1 1/2	2600	68	4043	1.38	0.37	1.31	3901	1.43	0.44	1.36	3653	1.45	0.50	1.37	2863	1.30	0.60	1.24	-	-	-	-	-	-	-	-
		RTA18T10200	2510	2	2600	72	4508	1.90	0.30	1.76	4368	1.95	0.37	1.80	4175	1.99	0.42	1.84	3483	1.84	0.51	1.71	2897	1.92	0.53	1.92	-	-	-	-
	24"	RTA24T10075	1180	3/4	4700	58	5095	0.51	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA24T10100	1295	1	4700	61	5582	0.68	0.91	0.69	5094	0.71	1.03	0.72	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA24T10150	1475	1 1/2	4700	65	6371	1.00	0.72	0.98	5969	1.04	0.84	1.02	5418	1.05	0.93	1.03	-	-	-	-	-	-	-	-	-	-	-	-
		RTA24T10200	1620	2	4700	67	6976	1.32	0.61	1.26	6638	1.37	0.72	1.30	6164	1.39	0.81	1.32	4848	1.35	0.90	1.29	-	-	-	-	-	-	-	-
		RTA24T10300	1890	3	4700	72	8178	2.19	0.44	2.01	7910	2.17	0.55	1.99	7486	2.19	0.63	2.01	6579	2.20	0.75	2.02	5165	2.11	0.79	1.94	-	-	-	-
	30"	RTA30T10100	965	1	7300	59	8874	0.88	1.08	0.87	7942	0.94	1.18	0.93	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA30T10150	1095	1 1/2	7300	62	10068	1.29	0.85	1.23	9266	1.36	0.97	1.30	8240	1.36	1.06	1.30	-	-	-	-	-	-	-	-	-	-	-	-
		RTA30T10200	1225	2	7300	65	11270	1.80	0.70	1.68	10618	1.87	0.82	1.74	9723	1.91	0.90	1.77	-	-	-	-	-	-	-	-	-	-	-	-
		RTA30T10300	1380	3	7300	67	12727	2.58	0.56	2.34	12106	2.66	0.66	2.41	11388	2.72	0.75	2.46	9483	2.67	0.87	2.42	-	-	-	-	-	-	-	-
		RTA30T10500	1635	5	7300	72	15033	4.31	0.40	3.80	14626	4.43	0.49	3.90	13989	4.48	0.56	3.94	12654	4.54	0.69	3.99	10756	4.40	0.77	3.87	7922	4.21	0.73	3.71
	36"	RTA36T10200	910	2	10000	63	14346	1.67	0.93	1.56	13047	1.72	1.06	1.61	11483	1.72	1.15	1.61	-	-	-	-	-	-	-	-	-	-	-	-
		RTA36T10300	1045	3	10000	66	16498	2.53	0.71	2.30	15381	2.59	0.84	2.35	14076	2.62	0.94	2.37	10528	2.44	1.04	2.22	-	-	-	-	-	-	-	-
		RTA36T10500	1245	5	10000	71	19661	4.28	0.51	3.77	18751	4.36	0.62	3.84	17655	4.40	0.71	3.87	15341	4.40	0.85	3.87	10821	3.97	0.85	3.51	-	-	-	-
		RTA36T10750	1425	7 1/2	10000	75	22467	6.42	0.39	5.56	21719	6.51	0.48	5.63	20850	6.58	0.56	5.69	18910	6.61	0.70	5.72	16624	6.49	0.79	5.62	11635	5.92	0.62	5.14
	42"	RTA42T10200	770	2	14000	61	18272	1.60	1.20	1.50	16358	1.68	1.33	1.57	14045	1.69	1.41	1.58	-	-	-	-	-	-	-	-	-	-	-	-
		RTA42T10300	895	3	14000	65	21244	2.50	0.91	2.27	19639	2.61	1.05	2.37	17776	2.64	1.16	2.39	11631	2.41	1.15	2.20	-	-	-	-	-	-	-	-
		RTA42T10500	1005	5	14000	67	23874	3.55	0.73	3.16	22458	3.67	0.86	3.26	20848	3.75	0.96	3.33	17008	3.69	1.10	3.28	-	-	-	-	-	-	-	-
		RTA42T10750	1205	7 1/2	14000	72	28574	6.14	0.51	5.33	27469	6.28	0.62	5.44	26215	6.39	0.72	5.53	23360	6.47	0.87	5.60	19760	6.32	0.96	5.48	-	-	-	-
		RTA42T11000	1335	10	14000	75	31680	8.34	0.42	7.15	30684	8.50	0.52	7.28	29494	8.60	0.60	7.37	27123	8.81	0.74	7.54	24259	8.76	0.85	7.50	20471	8.37	0.91	7.18
	48"	RTA48T10300	670	3	18000	63	24932	2.77	0.96	2.50	22900	2.11	1.47	1.94	19736	2.87	1.18	2.59	-	-	-	-	-	-	-	-	-	-	-	-
		RTA48T10500	790	5	18000	67	29538	4.54	0.70	3.99	27800	4.66	0.84	4.09	25504	4.72	0.94	4.14	21029	4.68	1.07	4.11	-	-	-	-	-	-	-	-
		RTA48T10750	900	7 1/2	18000	71	33386	6.70	0.54	5.79	32200	6.85	0.67	5.92	30303	6.93	0.76	5.98	25877	6.96	0.89	6.01	-	-	-	-	-	-	-	-
		RTA48T11000	990	10	18000	73	36822	8.88	0.45	7.60	35700	9.08	0.50	7.75	34056	9.15	0.65	7.82	29829	9.33	0.77	7.97	26410	9.21	0.88	7.87	-	-	-	-
	54"	RTA54T10500	710	5	23000	68	37130	4.26	-	-	34615	4.46	-	-	31680	4.67	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA54T10750	810	7 1/2	23000	71	42890	6.20	-	-	41128	6.50	-	-	38660	6.85	-	-	33210	6.99	-	-	25390	6.87	-	-	-	-	-	-
		RTA54T11000	905	10	23000	74	48450	8.54	-	-	46911	8.94	-	-	44640	9.41	-	-	40140	9.73	-	-	34980	9.78	-	-	27220	9.53	-	-
	60"	RTA60T10750	690	7 1/2	29000	68	51240	6.45	-	-	49020	6.85	-	-	45760	7.18	-	-	35770	7.09	-	-	-	-	-	-	-	-	-	-
	60"	RTA60T11000	755	10	29000	70	56770	8.48	-	-	54440	8.88	-	-	51490	9.21	-	-	40470	9.43	-	-	31650	8.72	-	-	-	-	-	-

							CFM @ STATIC PRESSURE
		MODEL #	RPM	HP	MIN CFM	dBA @ 10 ft	0"				1/8"				1/4"				1/2"				3/4"				1"
		THREE PHASE	RPM	HP	MIN CFM	dBA @ 10 ft	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)	CFM	BHP	FEI	FEPact (kW)
BLADE DIAMETER	18"	RTA18T30075A*	1556	3/4	2600	59	2794	0.45	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA18T30075B*	1785	3/4	2600	62	3203	0.68	-	-	2976	0.72	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA18T30100*	1920	1	2600	64	3449	0.85	0.52	0.82	3244	0.89	0.60	0.86	2815	0.85	0.67	0.82	-	-	-	-	-	-	-	-	-	-	-	-
		RTA18T30150*	2255	1 1/2	2600	68	4043	1.38	0.38	1.30	3901	1.43	0.45	1.35	3653	1.45	0.50	1.36	2863	1.30	0.61	1.23	-	-	-	-	-	-	-	-
		RTA18T30200*	2510	2	2600	72	4508	1.90	0.30	1.77	4368	1.95	0.36	1.82	4175	1.99	0.41	1.88	3483	1.84	0.51	1.72	2897	1.92	0.52	1.79	-	-	-	-
	24"	RTA24T30075*	1180	3/4	4700	58	5095	0.51	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA24T30100*	1295	1	4700	61	5582	0.68	0.95	0.67	5094	0.71	1.07	0.70	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA24T30150*	1475	1 1/2	4700	65	6371	1.00	0.74	0.96	5969	1.04	0.86	1.00	5418	1.05	0.95	1.01	-	-	-	-	-	-	-	-	-	-	-	-
		RTA24T30200*	1620	2	4700	67	6976	1.32	0.61	1.26	6638	1.37	0.72	1.30	6164	1.39	0.81	1.32	4848	1.35	0.90	1.29	-	-	-	-	-	-	-	-
		RTA24T30300*	1890	3	4700	72	8178	2.19	0.45	1.97	7910	2.17	0.56	1.96	7486	2.19	0.64	1.97	6579	2.20	0.76	1.98	5165	2.11	0.81	1.91	-	-	-	-
	30"	RTA30T30100*	965	1	7300	59	8874	0.88	1.11	0.85	7942	0.94	1.21	0.90	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA30T30150*	1095	1 1/2	7300	62	10068	1.29	0.87	1.22	9266	1.36	0.98	1.28	8240	1.36	1.07	1.28	-	-	-	-	-	-	-	-	-	-	-	-
		RTA30T30200*	1225	2	7300	65	11270	1.80	0.69	1.68	10618	1.87	0.81	1.75	9723	1.91	0.89	1.78	-	-	-	-	-	-	-	-	-	-	-	-
		RTA30T30300*	1380	3	7300	67	12727	2.58	0.56	2.31	12106	2.66	0.67	2.38	11388	2.72	0.75	2.43	9483	2.67	0.88	2.39	-	-	-	-	-	-	-	-
		RTA30T30500*	1635	5	7300	72	15033	4.31	0.40	3.81	14626	4.43	0.48	3.91	13989	4.48	0.56	3.96	12654	4.54	0.68	4.01	10756	4.40	0.76	3.89	7922	4.21	0.73	3.72
	36"	RTA36T30200*	910	2	10000	63	14346	1.67	0.92	1.57	13047	1.72	1.06	1.61	11483	1.72	1.15	1.61	-	-	-	-	-	-	-	-	-	-	-	-
		RTA36T30300*	1045	3	10000	66	16498	2.53	0.72	2.27	15381	2.59	0.85	2.32	14076	2.62	0.95	2.34	10528	2.44	1.06	2.19	-	-	-	-	-	-	-	-
		RTA36T30500*	1245	5	10000	71	19661	4.28	0.51	3.78	18751	4.36	0.62	3.85	17655	4.40	0.71	3.89	15341	4.40	0.84	3.89	10821	3.97	0.85	3.50	-	-	-	-
		RTA36T30750*	1425	7 1/2	10000	75	22467	6.42	0.40	5.50	21719	6.51	0.49	5.58	20850	6.58	0.57	5.64	18910	6.61	0.70	5.66	16624	6.49	0.80	5.56	11635	5.92	0.63	5.07
	42"	RTA42T30200*	770	2	14000	61	18272	1.60	1.20	1.50	16358	1.68	1.33	1.58	14045	1.69	1.40	1.58	-	-	-	-	-	-	-	-	-	-	-	-
		RTA42T30300*	895	3	14000	65	21244	2.50	0.92	2.24	19639	2.61	1.06	2.34	17776	2.64	1.17	2.36	11631	2.41	1.17	2.16	-	-	-	-	-	-	-	-
		RTA42T30500*	1005	5	14000	67	23874	3.55	0.73	3.14	22458	3.67	0.87	3.24	20848	3.75	0.97	3.31	17008	3.69	1.11	3.26	-	-	-	-	-	-	-	-
		RTA42T30750*	1205	7 1/2	14000	72	28574	6.14	0.52	5.26	27469	6.28	0.63	5.38	26215	6.39	0.73	5.47	23360	6.47	0.88	5.54	19760	6.32	0.97	5.41	-	-	-	-
		RTA42T31000*	1335	10	14000	75	31680	8.34	0.42	7.13	30684	8.50	0.52	7.27	29494	8.60	0.60	7.35	27123	8.81	0.74	7.53	24259	8.76	0.85	7.49	20471	8.37	0.92	7.15
	48"	RTA48T30300*	670	3	18000	63	24932	2.77	0.97	2.48	22900	2.11	1.50	1.91	19736	2.87	1.19	2.56	-	-	-	-	-	-	-	-	-	-	-	-
		RTA48T30500*	790	5	18000	67	29538	4.54	0.70	4.01	27800	4.66	0.83	4.12	25504	4.72	0.93	4.18	21029	4.68	1.06	4.14	-	-	-	-	-	-	-	-
		RTA48T30750*	900	7 1/2	18000	71	33386	6.70	0.55	5.74	32200	6.85	0.67	5.88	30303	6.93	0.77	5.95	25877	6.96	0.90	5.97	-	-	-	-	-	-	-	-
		RTA48T31000*	990	10	18000	73	36822	8.88	0.45	7.59	35700	9.08	0.56	7.77	34056	9.15	0.65	7.83	29829	9.33	0.77	7.99	26410	9.21	0.88	7.88	-	-	-	-
		RTA48T31500*	1130	15	18000	76	41958	13.27	0.35	11.20	41100	13.47	0.44	11.39	39709	13.59	0.51	11.50	36381	13.78	0.64	11.70	32899	13.82	0.73	11.70	29571	13.56	0.81	11.50
	54"	RTA54T30500*	710	5	23000	68	37130	4.26	-	-	34615	4.46	-	-	31680	4.67	-	-	-	-	-	-	-	-	-	-	-	-	-	-
		RTA54T30750*	810	7 1/2	23000	71	42890	6.20	-	-	41128	6.50	-	-	38660	6.85	-	-	33210	6.99	-	-	25390	6.87	-	-	-	-	-	-
		RTA54T31000*	905	10	23000	74	48450	8.54	-	-	46911	8.94	-	-	44640	9.41	-	-	40140	9.73	-	-	34980	9.78	-	-	27220	9.53	-	-
		RTA54T31500*	1025	15	23000	78	55520	12.10	-	-	53970	12.50	-	-	52110	12.92	-	-	48280	13.81	-	-	44310	14.17	-	-	39660	14.22	-	-
	60"	RTA60T30750*	690	7 1/2	29000	68	51240	6.45	-	-	49020	6.85	-	-	45760	7.18	-	-	35770	7.09	-	-	-	-	-	-	-	-	-	-
		RTA60T31000*	755	10	29000	70	56770	8.48	-	-	54440	8.88	-	-	51490	9.21	-	-	40470	9.43	-	-	31650	8.72	-	-	-	-	-	-
		RTA60T31500*	870	15	29000	74	66320	12.52	-	-	64126	13.12	-	-	61710	13.80	-	-	56720	14.43	-	-	49520	14.34	-	-	38320	13.51	-	-
		RTA60T32000*	955	20	29000	76	73090	16.62	-	-	70862	17.33	-	-	68880	17.70	-	-	65690	18.78	-	-	59270	18.80	-	-	52250	18.83	-	-
For three phase motors, substitute “*” with “M” for 230/460 volt or “P” for 575 volt. If 208V is required please specify. dBA ratings shown are measured at 0” static pressure and should be used as a guideline only. Fan tested in accordance with AMCA Standard 210 in a figure 12A configuration. FEP for models using a single-phase motor are determined using AMCA Standard 214-21, method 6.3 using standard air density and V-belt drive. FEP for models using a three-phase motor are determined using AMCA Standard 214-21, method 6.4 using standard air density, V-belt drive, 4 pole TEFC motors without VFD. Power rating does not include transmission losses. Performance ratings do not include the effects of appurtenances. Operation of the axial impeller in a configuration different from the published test configuration will affect performance.

Dimensions


MODEL	A Dia.	B Dia.	C Sq.	D	E	F	G
RTA18	18 3/8"	24 5/8"	24"	2 1/2	2	17	18
RTA24	24 3/8"	30 5/8"	30"	2 1/2	2	19	21
RTA30	30 3/8"	36 5/8"	36"	2 1/2	2	23	21
RTA36	36 3/8"	42 5/8"	42"	2 1/2	2	25	27
RTA42	42 3/8"	48 5/8"	48"	2 1/2	2	27	27
RTA48	48 1/2"	54 5/8"	54"	2 1/2	2	30	31
RTA54	54 1/2"	60 5/8"	60"	2 1/2	2	36	40
RTA60	60 1/2"	66 5/8"	68"	2 1/2	2	36	40

Replacement Parts

View replacement parts

Options

Roof curb.
Disconnect switch.

RTA Series Roof Exhausters - Belt Drive