Abstract: A modular roll down airflow control apparatus for use in typically refrigerated and insulated truck or transport vehicle boxes. The modular roll down airflow control apparatus includes a curtain assembly, a mandrel assembly (upon which the curtain assembly may be wound under spring bias), a pair of brackets (coupled to a wall near a ceiling of a truck box or cargo compartment that support the mandrel assembly), locking brackets (coupled to a wall near a floor of a truck box or cargo compartment that hold the curtain assembly down by engaging rods disposed in the curtain at intervals), and a plurality of edging seals (that may be coupled to the side walls of the cargo compartment and the curtain edges press against to form a seal). Air pressure in the cargo box typically acts to advantageously press the curtain edges against the edging seals forming a seal to prevent the escape of cold air and maintain a refrigerated space in the cargo compartment.

Abstract: A flexible yet durable roll-down curtain is normally stored in a rolled condition, and is unrolled during use. The curtain includes plural, vertically spaced apart rods extending through a width of the curtain. When rolled, the curtain wraps around an elongate, spring-loaded mandrel assembly. The mandrel assembly couples with a pair of mounting brackets mounted at opposing sidewalls of a temperature-controlled compartment. A pair of locking brackets disposed directly opposite one another at opposing sidewalls engage opposing ends of a rod extending through the curtain, to retain the curtain in a deployed position. A flexible side seal provides a sealing engagement vertically along each side edge of the curtain. When deployed, the curtain extends from ceiling to floor, and from sidewall to sidewall, forming a barrier against uncontrolled air movement from a space on either side of the curtain to a space on an opposing side of the curtain.

Abstract: A flexible yet durable roll-down curtain is normally stored in a rolled condition, and is unrolled during use. The curtain includes plural, vertically spaced apart rods extending through a width of the curtain. When rolled, the curtain wraps around an elongate, spring-loaded mandrel assembly. The mandrel assembly couples with a pair of mounting brackets mounted at opposing sidewalls of a temperature-controlled compartment. A pair of locking brackets disposed directly opposite one another at opposing sidewalls engage opposing ends of a rod extending through the curtain, to retain the curtain in a deployed position. A flexible side seal provides a sealing engagement vertically along each side edge of the curtain. When deployed, the curtain extends from ceiling to floor, and from sidewall to sidewall, forming a barrier against uncontrolled air movement from a space on either side of the curtain to a space on an opposing side of the curtain.