Abstract: The invention relates to an air circulation and filtration system for use with an indoor ice-skating arena. The air circulation and filtration system consists of intake and return air panels which replace and simulate in substantially all respects the boundary "boards" commonly used in indoor ice-skating facilities. The circulation and filtration system remains designed to remove undesirable gases such as carbon monoxide, carbon dioxide, nitrogen dioxide, and exhaust gases emanating from ice resurfacing machinery, from the ice-skating areas used by skaters. The return air panels contain a plurality of angularly offset air passage apertures which direct an air circulation course within an indoor ice-skating arena. The angularly offset air passage apertures promote a circular air course proximal to the ice-skating surface. The location of the intake air panels also promotes a circular air flow course.