Honeywell 11255 manual Other Standard Size PrecisionCell II Filters, Guide Specifications

Capacities and Dimensions

		Nominal Size	125 fpm		250 fpm		375 fpm		500 fpm		625 fpm		Media	Weight
		H x W x D (inch)											Area	Each
		Note 3	cfm	PD	cfm	PD	cfm	PD	cfm	PD	cfm	PD	(sq. ft.)	(lbs.)
	90-95%	24 x 24 x 4	500	.11	1000	26	1500	.42	2000	.68	2500	.95	120	6.5
		24 x 12 x 4	250	.11	500	.26	750	.42	1000	.68	1250	.95	60	3.5
	80-85%	24 x 24 x 4	500	.08	1000	.21	1500	.36	2000	.58	2500	.80	120	6.5
		24 x 12 x 4	250	.08	500	.21	750	.36	1000	.58	1250	.80	60	3.5
60-65%		24 x 24 x 4	500	.06	1000	.13	1500	.25	2000	.40	2500	.58	120	6.5
		24 x 12 x 4	250	.06	500	.13	750	.25	1000	.40	1250	.58	60	3.5

Other Standard Size PrecisionCell II Filters

Nominal Size	Nominal		Pressure Drop			Media Area	Weight Each
	Capacity (cfm)
H x W x D (inch)
		60-65%		80-85%	90-95%	( q. ft.)	(lbs.)
Note 3
20 x 20 x 4	1400	.40		.58	.68	84	4.0
20 x 16 x 4	1100					66	3.5
24 x 20 x 4	1850	.40		.58	.68	105	5.5
24 x 18 x 4	1500					93	5.0
25 x 20 x 4	1750	.40		.58	.68	105	6.0
25 x 16 x 4	1400					84	4.0

Notes

1.PD represents clean pressure drop in inches w.g. Recommended final pressure drop for all models is 1.5 inch w.g.

2.Operation down to zero air flow is satisfactory for all models.

3.Actual filter face size of 24” x 24” and 24” x 12” is 5/8” undercut on height and width. All other sizes are 1/2” under- cut on height and width. Actual filter depth is 3-3/4”

4.Efficiency is average and is based on ASHRAE Stan ard 52.1 test methods.

5.Performance tolerances conform to Section 7.4 of ARI Stan ard 850.

6.PrecisionCell II 24” x 12” filters are available with notches on the 24” horizontal sides. Contact factory.

7.Performance values stated may be averages typical of the products listed. Contact factory for actual performance test reports on specific products.

Guide Specifications

1.0 General
1.1 Medium and high efficiency extended surface fil-			diagonal support members.
ters shall be PrecisionC ll II minipleat panel fil-			2.3 The enclosing frame shall be double-wall water-
ters as manufactured by Fland rs.			resistant beverage board sealed between the
1.2 Filter sizes, efficiencies and capacities shall be			walls and to the filter pack with adhesive.
as scheduled on he drawings.			3.0 Performance
1.3 Filters shall be UL 900 Class 2 listed.
			3.1 Initial and final resistances shall not exceed the
2.0 Filter Construction			scheduled values.
2.1 The filter pack shall be constructed of water-laid			3.2 Media area must equal or exceed that of the
			specified filter
microfine fiberglass media containing a water-
r	p ll nt	binder formed into closely-spaced	3.3 The average efficiency shall be as determined by
pl	ats h	ld in position by adhesive bead separa-	ASHRAE Standard 52.1 test methods.
tors.			3.4 The manufacturer shall guarantee performance
2.2 T	e filter pack shall be strengthened on the a i r		as stated in the literature within tolerances as
en ering and air exit sides with horizontal and			outlined in Section 7.4 of ARI Standard 850.

Flanders - Foremost in Air Filtration

64 Corporate Headquarters, St. Petersburg, FL