September Exclusive: Get up to 15%-25% OFF air purifiers using code BESTSEPTEMBER-September Exclusive: Get up to 15%-25% OFF air purifiers using code BESTSEPTEMBERPublisher September Coupon code: BESTSEPTEMBER (Save 15% – 25%)(15% off 1000/2000 and 25% off 3500/5500)Active: Sept. 1-301000: $359 ($60 OFF)2000: $349 ($6