duraflame Crackleflame 4.5lb 3-hr Indoor/Outdoor Firelog, 4-pack Duraflame Crackleflame Firelogs Indoor Outdoor. Duraflame Crackleflame Firelogs, provide all of the ambiance of a crackling wood fire without the mess or hassle of cleanup. They light fully in less than five minutes and burn for up to three hours in any type of open-hearth fireplace. You can use this log indoors in your living area or outdoors in your fire pit with confidence of a lasting burn and pleasant fire. Duraflame logs are a choice that you can feel good about as not one tree is cut down to make a Crackleflame Firelog. Features Enjoy a soothing, crackling fire Lights quickly ? full flames in less than 5 minutes that last up to 3 hours Use in an indoor, open hearth fireplace or outdoor fireplace or fire pit UL approved safety classification for use in UL-listed factory built fireplaces Chimney Safety Institute of America Accepted Product USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.