These reusable steel forms work great on all masonry chimneys. The straight sided crown form is 5" deep and allow for a minimum 1-1/2" overhang or drop edge.
Note: To make a complete set, you need two pairs of forms. Each pair contains two parallel sides. For example: If you want a 36" x 60" crown, you'd need one pair of 20"-56" Forms (21489) and one pair of 40"-92" Forms (21491).
*Denotes a finish or option that has been discontinued
Gelco 21491 Product Specifications
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