The Gap Anchor is an ideal anchorage connector for tie-offs in the interior of a building or a window opening. The Gap Anchor is composed of lightweight aluminum and fits openings from 24" to 48" wide. The entire system is lightweight and durable, and helps create an anchor point that enables even the most difficult job to get done safely. Use with optional SRL cradle part # 00380 (sold separately) for use in combination with SRLs.