Pemko R1OSS_ Threshold Assembly Offset Application (3-1/2" Top Plate) Ratings Barrier-Free BHMA Certified Fire Rated - UL10C - Positive Pressure Finishes R1OSSA: A - Mill Finish Aluminum Aluminum R1OSSAK: K - PemKote Skid Resistant Surfacing Aluminum Downloads Category Specification (.pdf) Pemko R1OSS_ Cut Sheet (.pdf) Pemko R1OSS_ Line Drawing Autocad (.dwg) Pemko R1OSS_ Line Drawing Autocad (.dxf) Close Interested in this product? Contact us to order Related products R.5OSSMR_ R1.75OSS_ R.5OSS_