M G DURAVENT 4PVL-HSCR 4"Pellet Vent Horizontal Cap 4", square pellet vent horizontal cap, for use with horizontal terminations only, cap features swivel collar to adjust exhaust direction, cap features an optional swivel base, designed for stoves that burn wood pellets, patent pending venting for stoves inserts that use wood pellets, UL listed for 3" clearance to combustibles in the USA Canada, required 4" venting of pellet appliances above 4,000'. Features Manufactured in United states Easy to use Highly durable 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.