LeBARON stocks two types of steel extension rings and frames in common sizes to the New England area. Type 5 and Type 3. The Type 5 riser is for use when the amount of overlay exceeds the cover thickness. The Type 3 is used when the amount of overlay is less then the cover thickness. Both types have a single ¾” stainless steel adjustment device that allows the riser to be fitted snugly against the existing frame to preventing movement (maximum ½” in diameter).

 

·Risers are manufactured of A-36 Steel.

·All riser are welded to American Welding Society specifications.

·Upper sections are 3/8” thick, lower section are ¾” thick, continuously welded.

·Adjustment device is solid ¾” Type 304 stainless steel. Not plated mild steel nuts, which quickly deteriorate after installation.

·Adjustment nuts are solid 1”X1 ¾” C1020 Steel.

·All risers finished with black asphalt paint.

 

Risers can be fabricated to fit most applications as needed. Please contact your LeBARON representative to learn more about our steel extension rings.