Grade Rings

Precast Grade Ring Sizes:

• 20”x34”x2” ID
• 20”x34”x4” ID
• 20”x34”x6” ID
• 24”x2” ID
• 24”x4” ID
• 24”6” ID
• 24”x24”x2” ID
• 24”x24”x4” ID
• 24”x24”x6” ID
• 30”x3” ID
• 30”x4” ID
• 30”6” ID
• 30”x30”x2” ID
• 30”x30”x4” ID
• 30”x30”x6” ID

HDPE Grade Ring Sizes:

• 24”1.5” ID
• 24”x2” ID
• 24”x4” ID
• 24” Sloped ID
• 24”x24”x1.5” ID
• 24”x24”x2” ID
• 24”x24”x2.75” ID
• 24”x24”x2.75”/1.25” Sloped ID
• 24”x24”x2.75”/2.00” Sloped ID
• 30”x1.50” ID
• 30”x2” ID
• 30”x4” ID
• 30” Sloped ID

Drawings

• 20 x 34 ID GRADE RING
• 24 ID ROUND GRADE RING
• 24 ID SQUARE GRADE RING
• 30 ID ROUND GRADE RING
• 30 ID SQUARE GRADE RING
• 36 ID ROUND GRADE RING
• 36 ID SQUARE GRADE RING