Blaze Grills BLZPROIR Blaze Professional Infrared Searing Burner MISC Perimeter Aspiration Gives The Hood Perimeter Aspiration Gives The Hood A Clean They Are Backed Up By A Filter Clean Reminder Signal To Ensure Filters Can Be Cleaned Regularly( Li)(Li)Heat Sentry™ Detects Excessive Heat And Adjusts Blower Speed To High Automatically To Prolong Product Life By Reducing Damaging Effects Of High Temperatures( Li)(Li)10 Minute Delay Off Feature Keeps Hood Running After Cooking To Ensure Smoke & Odors Have Cleared The Environmen( Li)(Li)Hvi Certification Gives You Confidence This Hood Meets Rated Specs( Li)(Li)Can Be Used With Optional Universal Make Up Air Damper Md6Tu Or Md8Tu To Replace Air Lost Through Ventilation The Infrared Burner Can Easily Be Replaced With Any Conventional Burner On Your Blaze Professional Grill This Warranty Extends To The Original Purchaser Against Manufacture Defects For Products Purchased For Ordinary Single Family Home Use