Extensions 24″ I.D

Specifications:
 
6″ x 24″ – 80 lbs
12″ x 24″ – 160 lbs
24″ x 24″ – 320 lbs
36″ x 24″ – 480 lbs
Solid lid 24″ w/lifting handles
Lid 24″ w/6″ pipe and vent cap