Vestal Mfg Co. Fireplace Damper 36In Cst Iron 36 Complete with cast iron valve plate and 5-position poker control detached and bolted to body. Coated with black corrosion-resistant paint. No. 30 - Throat Dimensions: 30" front, 23" back, 10" depth - Overall Dimensions: 34" front, 26-3/4" back 13-1/2" depth. No. 36 - Throat Dimensions: 36" front, 29" back, 10" depth - Overall Dimensions: 40" front, 32-3/4" back 13-1/2" depth. No. 42 - Throat Dimensions: 42" front, 35" back, 10" depth - Overall Dimensions: 46" front, 38-3/4" back 13-1/2" depth. FIREPLACE DAMPERS Ht In=6 CAST IRON POKER CONTROL , EA