Perf-O Grip® bolt seats provide a secure anchor of the grating to structural supports. The standard bolt seat features oblong holes specifically designed to ensure a vertical anchor (with a 3/8” bolt) even if the hole is off concentrically by as much as 1/4”. Double bolt seats are available to maximize the attachment location flexibility by providing approximately 2” of longitudinal adjustment. Available in mill-galvanized steel and stainless steel. Hardware is not provided.

Assembly:

• Align planks on I-Beam or other anchoring cross-member.
• Mark the I-Beam for drilling purposes under the hole nearest the end. Drill a pilot hole.
• Remove plank and drill a finish hole.
• Replace plank. Place bolt seat in the hole which is now lined up with the drilled hole.
• Run the carriage bolt through bolt seat, plank and I-Beam, and tighten with washer and nut until secure.