Get current pricing for Atlas, 1,388 Sq. Ft. Atlas Horizontal 1388 Sq Ft Shell & Tube Heat Exchanger. Sa240-t321-ss Shell Rated 288 Psi @ 1000 Deg F. Sa249-t321-ss Tubes Rated 266 Psi @ 1000 Deg F . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: