Issue link: http://itf.uberflip.com/i/450983
60 3. ITF CLASSIFIED SURFACES The descriptions in the table below can be cross-referenced with the classified court surfaces to identify the generic court surface type associated with each product in the list. The descriptions relate only to court construction, and not to performance characteristics. Surface code Type Description A Acrylic/Polyurethane 1 Textured, pigmented, resin-bound coating. B Artificial clay 2 Sand-dressed and/or rubber-dressed surface with the appearance of clay. C Artificial grass 2 Synthetic surface with the appearance of natural grass. D Asphalt 3 Bitumen-bound aggregate. E Carpet Textile or polymeric material supplied in rolls or sheets of finished product. F Clay 4 Unbound mineral aggregate. G Concrete 3 Cement-bound aggregate. H Grass Natural grass grown from seed. J Hybrid clay Clay-dressed systems supported by a carpet matrix. K Other E.g. modular systems (tiles), wood, canvas. Notes: All surfaces may be porous or non-porous, with the exception of 'Clay' and 'Grass', which are always porous. 1 Normally forms only the uppermost few millimetres of a court. 2 "Appearance" relates only to the form of the uppermost surface material and not other characteristics (e.g. colour). These surfaces are typically composed of a carpet matrix dressed/filled with sand and/or rubber aggregate. 3 Used only when the material itself forms the playing surface. When used as a base for other surfaces (e.g. acrylic), reference will be made only to the playing surface. 4 This term denotes a type of surface that is constructed from naturally-derived materials, and includes an unbound fine gritty material as the uppermost (playing) layer, e.g. fast-dry. The integrity of the surface shall not be reliant on the addition of a carpet or membrane layer to the structure. The following tennis court surface products have been classified by the ITF and awarded pace ratings which fall into five categories: Category 1 (slow) Category 2 (medium-slow) Category 3 (medium) Category 4 (medium-fast) Category 5 (fast) Note: ITF Classification does not imply any form of ITF approval or endorsement.