Aluminium profile:
Alloy SIS 4104-06 finished as standard in brown or natural anodising or white varnish to provide minimal maintenance.
By implementation of strict internal Quality Control procedures throughout the manufacturing period from initial extrusion to final anodising process, the chemical bonding of the oxide film to the profile which prevents the peeling or stripping of the coating, is carefully monitored.
H Windows are also available in a range of 60 selected powder coating colours from the Corro-Coat range to enhance the designer's options.

Timber Profile:
Class 'B' Redwood conforming to SIS 818102 (not finger-jointing). The timber sections are supplied with the surfaces treated either with varnish or electrostatic spraying applied under controlled factory conditions.
Glazing and joint material conforming to SIS 818140.
Factory-fitted sealing-strip of Q-Ion type V-strip. Fittings:

Fittings:
The H Window fitting is made of cold- rolled steel, zinc-plated (minimum 15 microns), yellow chromed with protective lacquer based upon the counter balance principle to ensure the window is always fully balanced.
Espagnolette of zinc-plated steel. Polished chrome handle which can also be supplied with a lock.
For ease of installation and to suit client requirements, window frames can be pre-drilled prior to delivery and be provided with sealing caps.

Quality control:
As well as the stringent in-house quality control, independent testing is undertaken by the Swedish National Testing and Research Institute. The Institute visits the plant two or three times a year and selects windows from the production line on a random basis to he tested in their laboratories. Copies of test certificates can be made available upon request.

Technical and design service:
Our technical representatives are available to give advice to all specifiers of the H Aluminium Window System.
If you are unable to utilise the standard product in your design we can discuss the individual requirement and subject to viability of cost, advise on solutions.

Quality assurance:
Manufacture of all products is carried out in our Swedish factories under P-Mark licence, the Swedish equivalent of the British Standard Kite-Mark, regulated under the auspices of the Swedish National Testing and Research Institute.
Products have been independently tested in the U.K. to determine weather- tightness with respect to air infiltration, water penetration and wind resistance, in accordance with BS 5368: Part 1: I976, BS 5368: Part 2:1980, BS 5368: Part 3: 1978, as modified by BS 6375 Part 1: 1989.
The following results were obtained:
Air Infiltration. The samples satisfied the requirements of BS 6375: Part 1:1989, to a test pressure class of 600 Pa, Grade C.
Water Penetration. The samples satisfied the requirements of BS 6375: Part 1: 1989, to a test pressure class of 600 Pa. No water leakage was observed throughout the tests.
Wind Resistance. The samples satisfied the requirements of BS 6375: Part 1: 1989, to a test pressure class of 2400 Pa.