Universal Beams & RSJs (UB / UC)

Universal beams (UB) and universal columns (UC) — what most people call RSJs — are the backbone of extensions, wall removals, attic conversions and steel frames. Leinster Steel holds a full range in stock and cuts them to your exact length the same day, supplied with mill certificates so they're fully traceable.

Sizes we hold in stock

Common domestic and light-structural sizes we stock and cut include:

• 127x76, 152x89, 178x102 UB — smaller openings and light loads
• 203x133, 254x146, 305x165 UB — typical wall removals and extensions
• 356x171, 406x178, 457x191 UB and larger for bigger spans
• Universal columns (UC) 152x152, 203x203, 254x254 for posts and columns

What it's used for

• RSJs for removing load-bearing walls and forming openings
• Attic conversions and spliced attic beams for tight access
• Extension and new-build structural steel
• Portal frames, mezzanine floors and columns

Cut to length, mill certs, delivery

Every order is cut to your exact lengths free of charge, the same day on stock items, and comes with mill test certificates (S275 / S355) so your steel is fully traceable. Choose plain black or sandblasted & primed. Collect from our yard in Lusk, Co. Dublin, or we deliver across Leinster and Dublin on our own trucks. Priced by weight — get your exact number on the calculator.