Maxitrol 2 1/2" Straight Flow Thru Regulator RV91-2 1/2, Up To 7,500,000 BTUMaxitrol's Original Straight-Thru-Flow Design Meet Your Needs For High Capacities At Low Inlet Pressures. Models Are Designed For 1/2 PSI Rate Pressure Under The Ansi Standard For Gas Pressure Regulators. They Are Main Burner Only, Non-Lockup Type. Use Only Where Downstream Controls Can Operate At Line Pressure. Made in the USA. Product Specifications BRANDMaxitrol WIDTH INCHES9 HEIGHT INCHES8-1/2 PIPE SIZE INCHES2-1/2 WEIGHT LBS7.8 COLORSilver BTU7500000 MAX INLET PRESSURE (PSI)1 OUTLET PRESSURE IN W.C. INCHES3 - 6 CAPACITY CUBIC FEET PER HOUR7500 LISTING, RATING, CERTIFICATIONcCSAus LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERRV91-2 1/2