50% Ventilation - NL611








Size Options:
Most sizes are avilable from our standard range, however specific design requirements can be met to suit your needs.

Opening Method:
50% Ventilation units can be operated by either a manual telescopic handle (1-2 or 2-3 meters long) or Teleflex equipment with a winding handle extended to a fixed position, other mechanical or elctrical operations are available, please speak to our technical department.

Glazing Options:
Thermoformed roof lights - Single, Twin or Triple skin applications from our standard range, 3mm U/V protected outer skin / 3mm thick inner skin. Comes with a manufacturers discolouration and impact resistance guarantees. Glass - Most applications can be incorporated, but in the main georgian wire is specified.

Fixing Details:
The kerb is supplied fully assembled ready for fitment to roof structures, the kerb should be fixed at the corners then 300mm centres. Thermoformed roof lights are supplied seperately to the kerb and should be bolted to the opening frame, sealer washers, caps & roofing bolts with nuts are supplied as standard for this pupose.

Cleaning & Maintenance:

Cleaning - Thermoformed roof lights should be washed down with mild detergent and warm water, (Do not use abrasives).

Maintenance - On an annual basis do a visual check only.

Other Options Available:
This unit can be supplied in an ‘Adaptor kerb profile’ (see data sheet). Anti burglar & security options, such as Burglar bars & security fixings are available on request.

Points to check prior to advising us of your requirements:
When placing an enquiry / order please be sure to note the roof opening size, and where possible the width of the upstand kerb.

Impact Test Certification:
At the request of Nulite Ltd, B.R.E. tested various sized samples of Domed roof lights with either a PVC or steel upstand kerb, the test assesses the fragility of the specimen roof lights when subjected to an impact by a large soft body as in the standard ACR(m) 001:2000 (full deatils on the test reports are available on request)




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