Markar EG308 Edge Guards The Markar EG308 adjustable edge guard is fire-labeled & provides protection for the leading edge of the door. This guard is made of 16-gauge stainless steel. Downloads Catalog page (.) EG308 Installation Instructions (.pdf) Close Interested in this product? Contact us to order Related products Markar EGC308 Edge Guards Fire-rated single return edge guard. Markar EGT308 Edge Guards Overlapping astragal design to protect the latch protector.