Tight Fit Clamp with Eccentric Filler

Diagram of a tight fit clamp with eccentric filler, showing 1 hole and 2 hole clamp dimensions
Normal spacing for 1 hole clamp and filler is one pair every 2 feet.
Normal spacing for 2 hole clamp and filler is one pair every 3 feet.

Rail Clamp with Studded Filler

Diagram of a floating clamp with eccentric filler, showing 1 hole and 2 hole clamp dimensions
Normal spacing for 1 hole clamp and filler is one pair every 2 feet.
Normal spacing for 2 hole clamp and filler is one pair every 3 feet.

Floating Clamp with Eccentric Filler

Diagram of a rail clamp with studded filler on a wide flange, showing 1 hole and 2 hole clamp dimensions
Normal spacing for 1 hole clamp and filler is one pair every 2 feet.
Normal spacing for 2 hole clamp and filler is one pair every 3 feet.