N.K. Special Windows
Technical literature
Download profile options, glazing performance data and finish selections for residential and commercial systems.
Each file is a current PDF that our team can replace as specifications change, so the version you open is the version we use.
PDF. Frame profile options for bespoke windows, doors and conservatories, with sightline and section detail.
PDF. Thermal, acoustic and safety performance information for double and triple glazed units.
PDF. Powder-coated and timber-veneer finish selections, with reference samples for planning review.