Specifications include, but are not limited to: DESCRIPTION: All synthetic Double Jacket, Rubber Lined 1 ¾” x 50 fire hose. BRAND: North American Fire Hose Company (NAFH) – Model DB800SP 1 ¾” x 50 Fire Hose. PHYSICAL ATTRIBUTION: Jacket Construction The jackets shall be evenly and firmly woven, free from unsightly defects, dirt, knots, lumps and irregularities of twist that might affect the serviceability of the finished product. Each jacket shall be seamless and shall have polyester filler yarns woven around the hose throughout its length, with the warp ends interwoven with and covering the filler yarns. Warp ends of both the inner and outer jackets shall be nylon 6.6 entangled filament yarn, structured to allow total saturation with a polyurethane compound The use of polyester or staple yarns in the warp is not allowed. Filler yarns of both the inner and outer jackets shall be high tenacity filament polyester developed, designed and processed for fire hose jacket filler yarns. These filament polyester yarns shall be free from defects that are unsightly or may affect the serviceability of the finished hose. The entangled nylon warp ends must completely cover and protect the filament polyester filler yarns