PRODUCTS . Thermofor Heavy Duty HD3400 Automatic Greenhouse Autovent Roof or Window opener
Thermofor Heavy Duty HD3400 Automatic Greenhouse Autovent Roof or Window opener - Gardenbox

Thermofor Heavy Duty HD3400 Automatic Greenhouse Autovent Roof or Window opener

Regular price£29.69
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  • The Thermofor HD3400 Heavy Duty Automatic Window and Roof Vent Opener is the ideal accessory to give much needed ventilation to your greenhouse.  

    • With the same unique action and smooth twist free operation as the HD3200 this unit incorporating double upper arms has a stronger bracket assembly and includes extra strong springs to provide a very positive closing action. 
    • It is recommended for use on both aluminium and timber roof and top hung side vents, particularly light polycarbonate glazed, in exposed areas to reduce wind snatch effect and provide increased resistance to wind flutter. 
    • Finished in a durable polyester powder coating and corrosion resistant throughout.
    • It will lift up to 6 kg (13.25lbs), i.e. a vent weighing up to 12 kg (glass area not exceeding 0.65m² in an aluminium frame), with a maximum opening of 35cm (14 inches).
    • Designed and supplied by the same manufacturer over the past 50 years.
    • Simple and Easy to fit thanks to the comprehensive instructions included
    • Solar Powered - non electric or cables required
          >

        • The Thermofor HD3400 Heavy Duty Automatic Window and Roof Vent Opener is the ideal accessory to give much needed ventilation to your greenhouse.  

          • With the same unique action and smooth twist free operation as the HD3200 this unit incorporating double upper arms has a stronger bracket assembly and includes extra strong springs to provide a very positive closing action. 
          • It is recommended for use on both aluminium and timber roof and top hung side vents, particularly light polycarbonate glazed, in exposed areas to reduce wind snatch effect and provide increased resistance to wind flutter. 
          • Finished in a durable polyester powder coating and corrosion resistant throughout.
          • It will lift up to 6 kg (13.25lbs), i.e. a vent weighing up to 12 kg (glass area not exceeding 0.65m² in an aluminium frame), with a maximum opening of 35cm (14 inches).
          • Designed and supplied by the same manufacturer over the past 50 years.
          • Simple and Easy to fit thanks to the comprehensive instructions included
          • Solar Powered - non electric or cables required
                >

              • The Thermofor HD3400 Heavy Duty Automatic Window and Roof Vent Opener is the ideal accessory to give much needed ventilation to your greenhouse.  

                • With the same unique action and smooth twist free operation as the HD3200 this unit incorporating double upper arms has a stronger bracket assembly and includes extra strong springs to provide a very positive closing action. 
                • It is recommended for use on both aluminium and timber roof and top hung side vents, particularly light polycarbonate glazed, in exposed areas to reduce wind snatch effect and provide increased resistance to wind flutter. 
                • Finished in a durable polyester powder coating and corrosion resistant throughout.
                • It will lift up to 6 kg (13.25lbs), i.e. a vent weighing up to 12 kg (glass area not exceeding 0.65m² in an aluminium frame), with a maximum opening of 35cm (14 inches).
                • Designed and supplied by the same manufacturer over the past 50 years.
                • Simple and Easy to fit thanks to the comprehensive instructions included
                • Solar Powered - non electric or cables required
                      >

                    • The Thermofor HD3400 Heavy Duty Automatic Window and Roof Vent Opener is the ideal accessory to give much needed ventilation to your greenhouse.  

                      • With the same unique action and smooth twist free operation as the HD3200 this unit incorporating double upper arms has a stronger bracket assembly and includes extra strong springs to provide a very positive closing action. 
                      • It is recommended for use on both aluminium and timber roof and top hung side vents, particularly light polycarbonate glazed, in exposed areas to reduce wind snatch effect and provide increased resistance to wind flutter. 
                      • Finished in a durable polyester powder coating and corrosion resistant throughout.
                      • It will lift up to 6 kg (13.25lbs), i.e. a vent weighing up to 12 kg (glass area not exceeding 0.65m² in an aluminium frame), with a maximum opening of 35cm (14 inches).
                      • Designed and supplied by the same manufacturer over the past 50 years.
                      • Simple and Easy to fit thanks to the comprehensive instructions included
                      • Solar Powered - non electric or cables required
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