HeatStar 25' Duct for HS4000IDG SKU: F151084
Flexible Duct 25ft L x 16in W for HS300ID & HS3000ID SKU: F150050
25 ft. Flexible Duct 12" Wide For Indirect Fired Heaters SKU: F150040
Heatstar 25 ft. Flexible Duct 14" Wide For HS2000ID SKU: F150043