Extension Series – Support with Raised Channel

  • Material is 1-5/8″ [41.3] wide x 1/4″ [6.3] thick unless specified.
  • Holes are 9/16″ [14.3] diameter, 13/16″ [20.6] center to edge on 1-7/8″ [47.6] centers unless specified


RSB-EX Extension Series Support With 3/8″ Threaded Rod Extension and Pre-Galv or Hot Dip Galv Steel Channel 
Part No.  No. of Bases  Height Strut Size Weight Lbs (kn)  Uniform Load” Lbs (kn)
RSB EX81081PG 1 8″ 13/16″ 5.3 (2.4) 1,000 (4.4)
RSB EX121081PG 1 12″ 13/16″ 5.5 (2.4) 1,000 (4.4)
RSB2EX162416PG 2 16″ 1-5/8″ 13.5 (6.1) 2,000 (8.8)
* This load is only for the capacity of the components in this assembly
Please consult roofing manufacturer or engineer for roof load capacity


Finish – Fitting: PG – Pre-galvanized Zinc
ASTM A653 G-90 Pre-galvanized zinc is produced by continuously rolling steel coils or sheets through molten zinc at the mills. The coils or sheets are slit to size and fabricated by forming, shearing or punching to produce the finished product. During fabrication cut edges are not generally zinc coated; however, the zinc near the uncoated metal becomes a sacrificial anode to protect the bare areas.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and which is known to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov