CTB and CTBRHULInline Tubular Centrifugal Fans

Model Overview

The Inline Tubular Centrifugal (CTB) series offers one of the widest ranges of sizes, horsepower, and performance in the industry. Models CTB are high capacity belt drive tubular centrifugal fans rated from 300 to 20,000 CFM, with static pressure capability up to 2-1/2". These fans are designed for commercial and industrial in-line applications that demand quiet, efficient and reliable air movement. They are used to exhaust air from or supply air to commercial and industrial applications, such as, general building ventilation, enclosed garages, paint spray booths, heat and smoke ventilation systems, restaurant and kitchen exhaust ventilation, historical buildings with limited roof space and restrictive duct lengths, and other applications where air is moved through a duct system against moderate static pressure.

The CTBRHUL is specifically suited for restaurant exhaust where roof space is limited; sidewall mounted fans are prohibited, or duct lengths are restricted. The CTBRHUL is also perfect in areas where extreme weather and outside air temperatures are a concern when maintenance on the fan is needed.

The centrifugal wheel is designed to provide higher efficiencies and lower sound levels than propeller type fans when used in medium pressure duct systems. Tubular centrifugal fans can be mounted in any position providing for installations in the smallest possible space.

2-year fan housing warranty, 1-year motor warranty

Specifications

Dimensions

CTB

Dimensional data is displayed in inches.

Size	I.D. A	O.D. B	Length C	D	B.C.D.	E (Max)
9	18-3/8	22-1/2	23	17-15/16	19-3/4	24
11	18-3/8	22-1/2	23	17-15/16	19-3/4	24
13	20-3/8	24-1/2	24-1/2	18-3/8	21-3/4	25
15	24-3/8	28-9/16	25-1/2	21-1/4	25-3/4	29
18	30-3/8	34-9/16	31	25-1/2	32	31
22	36-3/8	40-9/16	35-1/2	29-13/16	38	33-1/2
24	42-1/2	47	42	34-1/8	44-1/4	34-1/2
30	48-1/2	53	48-1/2	38-3/8	50-3/4	40-1/2
36	55	59-1/2	54	43	57-1/4	44
42	61	65-1/2	59-1/2	47-1/4	63-1/4	45

Highlighted cells indicate that the motor may extend past unit size.

CTBRHUL

Dimensional data is displayed in inches.

Size	I.D. A	O.D. B	Length C	D	B.C.D.	E (Max)
9	18-3/8	22-1/2	23	17-15/16	19-3/4	24
11	18-3/8	22-1/2	23	17-15/16	19-3/4	24
13	20-3/8	24-1/2	24-1/2	18-3/8	21-3/4	25
15	24-3/8	28-9/16	25-1/2	21-1/4	25-3/4	29
18	30-3/8	34-9/16	31	25-1/2	32	31
22	36-3/8	40-9/16	35-1/2	29-13/16	38	33-1/2
24	42-1/2	47	42	34-1/8	44-1/4	34-1/2
30	48-1/2	53	48-1/2	38-3/8	50-3/4	40-1/2
36	55	59-1/2	54	43	57-1/4	44
42	61	65-1/2	59-1/2	47-1/4	63-1/4	45

Highlighted cells indicate that the motor may extend past unit size.

Accessories

Literature and Documentation

Applications