IHPSV4.5HT-2 | Horizontal Termination, Firestop and Adaptor | SV4.5" and 7.5" Concentric Vent | H1968 | IHP570440213SKU:H1968Inventory ID:03611719Select Item:Price: $299.00Quantity: Horizontal vent systems terminate through an outside wall. Adaptor/Slip and terminal have 5" to 8-1/2" length. SV4.5HT-2 venting component is used on some Astria, Superior, and Lennox gas burning direct vent fireplaces. Check your model's Installation Manual for listed Secure Vent Components. Reviews Choose your rating12345