ASTM D3656/D3656M-13 (R2021) pdf free download.Standard Specification for Insect Screening and Louver Cloth Woven from Vinyl-Coated Glass Yarns.
1.1 This specification covers the requirements for vinyl- coated glass yarn insect screening and louver cloth.
1.2 This specification is intended to assist ultimate users by designating the sizes and types of these products that are generally available in the industiy.
1.3 This specification shows the terminology and requirerncnts for:
1.3.1 Commercial standard vinyl-coated glass yarn insect screening designed and woven primarily for installation in or on any dwelling, patio, screening enclosure, building, or structure for the purpose of keeping out flies, mosquitoes, and most insects.
1.3.2 Vinyl-coated glass yarn louver cloth used extensively in soul and louver vents to keep out most large insects, birds, and airborne litter, while at the same time providing for adequate ventilation and air circulation.
1 .4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents: therefore, to ensure conformance with the standard, each system shall he used independently of the other, and values from the two systems shall not be combined.
3. Terminology
3.1 For all terminology relating to D 13.18, Glass Fiber and Its Products, refer to Terminology D701 81D701 8M.
3.1.1 The following terms are relevant to this standard: atmosphere for testing textiles, insect screening. louver cloth, mesh.
3.2 For all other terms related to textiles, refer to Terminology D123.
4. Classification
4.1 Vinyl-coated glass yarn insect screening is produced in two basic classes and mesh to afford required strength and insect protection using yarns as directed in Specification D3374/D3374M. These two classes are as follows:
4.1. 1 Class 1—Insect screening woven from vinyl-coated glass yarn having a nominal thickness of 0.292 mm [0.0115 in.].
4.1.2 Class 2—Insect screening woven from vinyl-coated glass yarn having a nominal thickness of 0.330 mm [0.013 in.].
4.2 The mesh, width, and colors are listed in Table 1.ASTM D3656/D3656M pdf download.