Characteristics. Horizon is easy to handle and very flexible thanks to its durable multi-spiral reinforcement layers. Horizon is the most commonly used economical EPDM general-duty air and water hose that can be used in numerous agricultural and industrial construction applications. where oil is not a factorspecification. Inside diameter. 38 – 38 in.. out Day. Connection Size – 0.720 in. Length – 25 ft. – 0.25 in. NPT. Connection type – male. Operating pressure – 300 psi – 300 psi Max. Operating temperature. -40 F min -40 C Min 212 F Max 100 C Max. Red color. Tube material – EPDM. Cover material – EDPM. Spiral reinforcement – Polyester thread