The FA Series Campfire Rings combine our original Infinitely Adjustable cooking grate with our flanged fire ring – a practical design combination for campfire control and convenient outdoor cooking.Fire ring is rolled from a 3/16" thick steel plate with an integral formed 1" wide flange around top edge.  This flange provides extra strength against heat warpage and eliminates a vertical edge.  Draft holes are provided for fire ventilation.The 270 sq. inch cooking grate is Infinitely Adjustable vertically from below the top of the fire ring to 7-3/4" higher.  This cantilevered grate is structurally reinforced to resist hard use and vandalism.  The cooking grate can be lifted over and out of the campfire ring, but remains permanently attached.The FA-30 features a 30” inside diameter and four optional side heights of 7-3/8”, 9” and 11-3/8”. Plus a taller firering Model FA-30/18/PAthat is  16-7/8" tall. The different side heights affect the size of fire that can be built. FA Series fire rings (7", 9" and 11" tall) include tip back anchor pins (/TB) to keep the campfire ring secured in one place, but allow the fire ring to tip up for easy clean out.  These pins must be set in concrete.  Cooking grate adjustment handles, made from 3/4" dia. steel, are turned outside of the fire ring, away from the fire.  The handle grips are 1/8" x 1/2" coiled steel bar.  The cooking grate is built using 5/8" dia. steel perimeter bars and 1/2" dia. steel grate bars.  All grate bars are welded on both sides.OPTIONAL Anchor Systems:Angle Spade Anchors (/AL) are 3 spades attached around the firering and buried in the ground. The firering cannot be tipped up.Tip Back Spade Anchors (/TA) are 2 spades at the rear hinge point and buried in the ground. The firering can be tipped up.