The Krueger 1240P series of modular core perforated diffusers are one of Krueger’s most versatile designs, combining excellent performance with on-the-job flexibility. The 1240P series diffusers exhibit typical isothermal throws of 10’ to 15’ for 4-way air distribution and 35’ to 50’ for 1-way air distribution. The perforated face conceals the interior modular cores for an uninterrupted ceiling appearance. The modular cores are factory set for a 4-way air pattern, but may be field adjusted for 1-, 2- or 3-way air patterns. The modular capability makes the 1240P ideal for installations with changing air pattern requirements such as tenant lease spaces.