Lonsdale GlazaTherm Ventilation

GlazeTherm Roof Vent Size Matrix
Width (W) mm & Length (L) mm are O/A Fixed Frame Sizes

	Width-W
Length-L	600	700	800	900	1000	1100	1200
600	0.28	0.31	0.34	0.37	0.40	0.43	0.46
	0.50	0.56	0.61	0.67	0.72	0.78	0.83
700	0.31	0.34	0.37	0.40	0.43	0.46	0.49
	0.56	0.62	0.67	0.73	0.78	0.84	0.89
800	0.34	0.37	0.40	0.43	0.46	0.49	0.52
	0.61	0.67	0.72	0.78	0.83	0.89	0.94
900	0.37	0.40	0.43	0.46	0.49	0.52	0.55
	0.67	0.73	0.78	0.84	0.89	0.95	1.00
1000	0.40	0.43	0.46	0.49	0.52	0.55	0.58
	0.72	0.78	0.83	0.89	0.94	1.00	1.05
1100	0.43	0.46	0.49	0.52	0.55	0.58	0.61
	0.78	0.84	0.89	0.95	1.00	1.06	1.11
1200	0.46	0.49	0.52	0.55	0.58	0.61	0.64
	0.83	0.89	0.94	1.00	1.05	1.11	1.16
1500	0.55	0.58	0.61	0.64	0.67	0.70	0.73
	1.00	1.06	1.11	1.17	1.22	1.28	1.33
	0.64	0.67	0.70	0.73	0.76	0.79	0.82
	1.16	1.22	1.27	1.33	1.38	1.44	1.49
2000	0.70	0.73	0.76	0.79	0.82	0.85	0.88
	1.27	1.33	1.38	1.44	1.49	1.55	1.60
2400	0.82	0.85	0.88
	1.49	1.55	1.60

Approx Free Air Area m2 - based upon opening actuator stroke lengths: 300mm, 550mm
Side Hung Vents are restricted to 1.20m2 (Width x Length) with max O/A Fixed Frame Length 1800mm
If the size you require is outside the boundaries of the above matrix, please contact our Sales Office 0n 0208 801 4221

Have you ever wondered why some vents leak and others don’t?

Call our sales office to request your free report ‘Important questions you should ask any roof vent manufacturer’

Our GlazaTherm ventilator goes through a 12 step manufacturing process to ensure weather tightness and durability you can rely on again and again.

Manufactured from thermally broken aluminium using the latest polyamide technique for maximum thermal performance, GlazaTherm provides a cost effective way of ventilating both commercial buildings and conservatories.

click here for typical installation details.

click here for section profiles and typical installation details.

Have you ever wondered why some vents leak and others don’t?

Call our sales office to request your free report ‘Important questions you should ask any roof vent manufacturer’

Our GlazaTherm ventilator goes through a 12 step manufacturing process to ensure weather tightness and durability you can rely on again and again.

Opening Mechanisms


24V Chain Motor	24V Linear Motor	Manual Pole Operated Gear


230V Chain Motor	230V Linear Motor	Manual Hand Operated Gear


230V ac Infra Red Controller	100-DM

Lonsdale GlazaTherm Ventilation

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