IHPSFKIT18SS | Horizontal Flex Vent Kit | 4.5" and 7.5" X 18" to 36" Length | Small Terminal | 94L05 | IHP570440223SKU:94L05Inventory ID:03613110Select Item:Price: $406.00Quantity: Secure Flex venting kits and components may be used in any venting application in place of rigid Secure Vent (SV4.5) direct vent components. SFKIT18SS kit includes one 4.5" diameter and one 7.5" diameter flexible vent, flex adapter, firestop / spacer, two 4.5" and two 7.5" clamps, and Small Square Termination. SFKIT18SS venting component is used on some Astria, Superior, and Lennox gas burning direct vent fireplaces. Check your model's Installation Manual for listed Secure Flex Components. Reviews Choose your rating12345