Columns: Fireproof: Rectangular Type RR Rating 2 Hour

Columns: Fireproof: Rectangular Type RR Rating 3 Hour

Columns: Fireproof: Rectangular Type RR Rating 4 Hour

Columns: Fireproof: Round Type OH Rating 2 Hour

Columns: Fireproof: Round Type OH Rating 3 Hour

Columns: Fireproof: Round Type OH Rating 4 Hour

Columns: Fireproof: Round Type OO Rating 2 Hour

Columns: Fireproof: Round Type OO Rating 3 Hour

Columns: Fireproof: Round Type OO Rating 4 Hour

Columns: Fireproof: Round Type OS Rating 2 Hour

Columns: Fireproof: Round Type OS Rating 3 Hour

Columns: Fireproof: Round Type OS Rating 4 Hour

Columns: Fireproof: Square Type SH Rating 2 Hour

Columns: Fireproof: Square Type SH Rating 3 Hour

Columns: Fireproof: Square Type SH Rating 4 Hour

Columns: Fireproof: Square Type SO Rating 2 Hour

Columns: Fireproof: Square Type SO Rating 3 Hour

Columns: Fireproof: Square Type SO Rating 4 Hour

Columns: Fireproof: Square Type SS Rating 2 Hour

Columns: Fireproof: Square Type SS Rating 3 Hour

Columns: Fireproof: Square Type SS Rating 4 Hour