Get current pricing for Killebrew Engineering, 131.9 Sq. Ft. Horizo 131.9 Sq Ft Horizontal Ss U-tube Heat Exchanger. 304l-ss Shell Rated 300 Psi @ 450 Deg F. 304l-ss Tubes Rated 300 Psi @ 450 Deg. F. Shell: 10.75 . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: