Precisionaire Surelock B manual Model Number Development, Width Code

Cfm Capacities and Dimensions

Using Standard Alpha Cell and Alpha 2000 High Capacity HEPA Filters

	Overall								Width Code
		Initial	Face	Filter
Height					10W	15W	20W	25W	30W	35W	40W	45W	50W	55W	60W
	Flange
		PD	Velocity	Type
Code	Height
		(in. w.g.)	(fpm)	(Note 4)				Overall Flange Width (inches)
	(in.)
					26	39-9/16	51-9/16	65-1/8	77-1/8	90-11/16	102-11/16	116-1/4	128-1/4	141-13/16	153-13/16
		1.0	300	Std	600		1200		1800		2400	--	--
05H	15-5/6	1.0	375	HC	750	--	1500	--	2250	--	3000			--	--
		1.3	500	HC	1000		2000		3000		4000
		1.0	300	Std	1200	1800	2400	3000	3600	4200	4800	5400	6000	6600	7200
10H	27-5/16	1.0	375	HC	1500	2250	3000	3750	4500	5250	6000	6750	7500	8250	9000
		1.3	500	HC	2000	3000	4000	5000	6000	7000	8000	9000	10000	11100	12000
		1.0	300	Std	1800		3600		5400		7200	--	9000		10800
15H	39-5/16	1.0	375	HC	2250	--	4500	--	6750	--	9000		11250	--	13500
		1.3	500	HC	3000		6000		9000		12000		15000		18000
		1.0	300	Std	2400	3600	4800	6000	7200	8400	9600	10800	12000	13200	14400
20H	51-5/16	1.0	375	HC	3000	4500	6000	7500	9000	10500	12000	13500	15000	16500	18000
		1.3	500	HC	4000	6000	8000	10000	12000	14000	16000	18000	20000	22000	24000
		1.0	300	Std	3000		6000		9000		12000	--	15000		18000
25H	63-5/16	1.0	375	HC	3750	--	7500	--	11250	--	15000		18750	--	22500
		1.3	500	HC	5000		10000		15000		20000		25000		30000
		1.0	300	Std	3600	5400	7200	9000	10800	12600	14400	16200	18000	19800	21600
30H	75-5/16	1.0	375	HC	4500	6750	9000	11250	13500	15750	18000	20250	22500	24750	27000
		1.3	500	HC	6000	9000	12000	15000	18000	21000	24000	27000	30000	33000	36000
		1.0	300	Std	4200		8400		12600		16800	--	21000		25200
35H	87-5/16	1.0	375	HC	5250	--	10500	--	15750	--	21000		26250	--	31500
		1.3	500	HC	7000		14000		21000		28000		35000		42000
		1.0	300	Std	4800	7200	9600	12000	14400	16800	19200	21000	24000	26400	28800
40H	99-5/16	1.0	375	HC	6000	9000	12000	15000	18000	21000	24000	26250	30000	33000	36000
		1.3	500	HC	8000	12000	16000	20000	24000	28000	32000	35000	40000	44000	48000

Notes:

1.Height and Width Code: The first numeral represents the number of 24 in. x 24 in. filters high or wide. If 24 in. x 12 in. filters are also used in the height width, the second numeral is “5”.

2.Standard housing depth is 27 in. with or without a 2 in. prefilter track.

3.For capacities and pressure drop other than those shown, ratio the face velocities.

4.Capacities shown are based on Standard (Std) and High Capacity (HC) 99.97% and 99.99% Alpha Cell filters nominal 12 in. deep and actual face sizes of 24 in. x 24 in. and 24 in. x 12 in.

5.Use Surelock Housings with Alpha 95 filters rated at 500 fpm and 1.0 in. w.g. initial pressure drop.

Model Number Development

Example: The number SLB220H30WX represents a Surelock SLB 2 20H 30W

B housing with 2 in. prefilter track, 2 filters high and 3 filters wide. The letter X indicates that special features are required.

Prefix SLB stands for Surelock B style housing

Prefilter track designation. Nothing goes here if no prefilter track

is desired. Insert a 2 for a 2” prefilter track or a 4 for 4” prefilter track

Height and Width code: The first numeral of each section represents the number of 24”x24” filters high or wide. If a 24”x12” filter is used to com- plete the height or width, the second numeral of section will be “5”.

For special features or sizes, end with the suffix “X” and describe them.

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