Vari-Pitch Adjustable Vents

Lomanco makes it fit - whatever the pitch.

Years ago, with the ingenious invention of the adjustable gable louver, Lomanco was born.

All Lomanco Vari-Pitch Adjustable Louvers are constructed entirely of heavy gauge aluminum. Units are completely assembled, ready to install.

To determine the size needed, just measure down along the roofline from the peak of the roof to the frame. The appropriate size louver will adjust to the opening in seconds, and can be installed securely in minutes.

The Lomanco® Series 900 Adjustable Louvers fit roof pitches of 2-1/2/12 to 9/12. The ingenious design actually forces the louver blades to pivot, changing angle as the unit is adjusted. This permits maximum air flow capacity while assuring optimum protection from the weather.

The Lomanco® A-Series Vari-Pitch Adjustable Louvers are available in high pitch and low pitch designs. They also feature all-aluminum construction and are completely assembled and ready to install.

Lomanco® Twin Section Stationary Louvers can be used in matched pairs for roof peak installation, or one by one for sheds, kneewalls and similar structures. The rugged, all-aluminum sections are joined securely with quick and easy slip joint center fasteners. Lomanco's extra-wide mounting flange permits easy installation.

Rectangular Vents

These heavy gauge, all-aluminum gable vents are tightly constructed with machine tab folds, and feature wide mounting flanges for easy installation. Weather and pest protection is assured.

• Features
• Instructions
• 100, 150, 200 Series
• 300 Series
• 900, A Series

Lomanco® Triangular Line Gable vents

• A-Series is adjustable for steeper pitches.
• A-Series all-aluminum vari-pitch louver adjustable from 6/12 to 12/12 roof pitches.
• A Series and 900 Series have a unique blade design that provides maximum weather protection.
• 900 Series all-aluminum, vari-pitch louver. Adjustable from 2-1/2 12 to 9/12 roof pitches.
• 300 Series all-aluminum, twin section stationary louver. Two-piece complete louver with easy slip joint connectors.
• Applicable in sheds, knee walls, etc.
• 300 Series embossed painted finish for added strength, extended paint life, durability, and blending appearance.
• 8x8 perma-coated screen provided.
• Wide mounting flange.
• Note: A Series and 900 Series Chart available for specifications at each pitch adjustment.

Lomanco® Square Line Gable vents

• All-aluminum construction.
• 100 Series used for flush mounting.
• 200 Series used for recessed mounting. Ideal for homes with siding or brick.
• 150 Series can be mounted flush or recessed.
• 100 and 200 offer wide mounting flange.

Lomanco® Gable Vent Instructions

Model	Name	Description	Link
900	Gable Vent	Vari-Pitch Chart	View/Print/Download
900	Gable Vent	900 Series Installation	View/Print/Download

*Recommended stock sizes. Available colors: Mill Finish, White, Brown

Model	Hole Size	Overall Size (in.)	NFA(in.2)	CTN QTY	WT. CTN. (lbs)
100	8x8	11 x 11	22	6	3.25
100	8x12	11 x 15	36	6	4
100	8x16	11 x 19	51	6	5
100	*12x12	15 x 15	56	6	5.5
100	12x16	15 x 19	79	6	6.25
100	*12x18	15 x 21	90	6	7.5
100	12x24	15 x 27	124	6	9.25
100	14x18	17 x 21	106	6	8.25
100	*14x24	17 x 27	146	6	10.5
100	*18x24	21 x 27	190	6	12.5
100	24x14	27 x 17	140	6	9.25
100	24x24	27 x 27	256	6	14.5
100	*24x30	27 x 33	325	6	19.25
100	30x12	33 x 15	146	6	10.5
100	30x18	33 x 21	234	6	13.75
100	30x24	33 x 27	332	6	18.75
150	8 x 8	10 x 10	19	12	4.5
150	12 x 12	14 x 14	49	12	8.5
150	12 x 18	14 x 20	79	12	11.5
150	14 x 24	16 x 26	128	12	16.25
150	18 x 24	20 x 26	147	12	20.25
150	24 x 30	26 x 32	285	6	15.25
200	8x8	11 x 11	22	6	3.75
200	8x12	11 x 15	36	6	4.5
200	8x16	11 x 19	51	6	5.5
200	*12x12	15 x 15	56	6	6.25
200	12x16	15 x 19	79	6	7.5
200	*12x18	15 x 21	90	6	8.25
200	12x24	15 x 27	124	6	9.75
200	14x18	17 x 21	106	6	8.75
200	*14x24	17 x 27	146	6	11.75
200	*18x24	21 x 27	190	6	13.75
200	24x14	27 x 17	140	6	10.5
200	24x24	27 x 27	256	6	16.75
200	*24x30	27 x 33	325	6	20.5
200	30x12	33 x 15	146	6	12
200	30x18	33 x 21	234	6	16.5
200	30x24	33 x 27	332	6	20

*Recommended stock sizes. Available colors: Mill Finish, White, Brown

Model	Base LTH. (ft.)	Roof Pitch	Center HT. (in.)	NFA (in.2)	QT. CTN.	WT. CTN.(lbs.)
306-3	6	3/12	9	80	1	4
306-4	6	4/12	12	121	1	3.75
306-5	6	5/12	15	162	1	4.5
308-3	8	3/12	12	166	1	5
*308-4	8	4/12	16	242	1	6.5
*308-5	8	5/12	20	322	1	7
*308-6	8	6/12	24	408	1	8
310-3	10	3/12	15	273	1	7.25
*310-4	10	4/12	20	398	1	8.5
*310-5	10	5/12	25	523	1	10
310-6	10	6/12	30	605	1	11.5
312-3	12	3/12	18	416	1	12
312-4	12	4/12	24	609	1	11.5
312-5	12	5/12	30	805	1	14.25

Note: A Series and 900 Series Chart available for specifications at each pitch adjustment.

*Recommended stock sizes. Available colors: Mill Finish, White, Brown

Model	Frame LTH. (in.)	Adjustable Base LTH. (in.)	NFA (in.2)	QTY. CTN.	WTN. CTN. (lbs.)
904	21.25	41.625 - 34	34 to 69	1	2.5
*905	26.25	51.375 - 42	57 to 117	1	3.5
906	31.25	61.125 - 50	86 to 181	1	4.75
*907	36.25	71 - 58	122 to 255	1	6
908	41.25	80.75- 66	163 to 341	1	8
*909	46.25	90.5- 74	211 to 439	1	8.75
910	51.25	100.375- 82	263 to 548	1	11
911	56.25	110.125- 90	320 to 668	1	13.5
A50B	20.375	36.375- 28.875	46 to 60	1	2.5
A56B	23.875	42.875- 33.75	71 to 100	1	3.25
A88B	27.56	49.375- 39	81 to 142	1	4