Abstract: A front face attachment for a fireplace allows a single fireplace construction to be converted from a first arrangement having front facing top outlet and bottom inlet with covering louver panels for air flow around the combustion chamber to a second arrangement in which there are no front facing outlets and the top and bottom outlets are behind front cover flanges for receiving cladding materials.

Abstract: A direct vent gas fireplace has a combustion air supply duct extending down the back wall, on the outside of the housing back wall. It is connected to the firebox by a duct assembly with a flange that connects to the housing and two ducts that connect to the firebox. The supply duct is located laterally between two cooling air ducts that lead from the cool air zones at the bottom outer corners of the housing to a cooling air plenum inside the top of the housing. Inside the cooling air plenum and the cooling air ducts are a room air plenum and room air circulating space for the circulation of room air to be heated. This provides a compact construction with adequate wall cooling without the need for additional thermal insulation.

Abstract: A direct vent gas fireplace has a combustion air duct extending down the back wall, between the housing back wall and the fireplace back wall. It is located laterally between two cooling air ducts that lead from the cool air zones at the bottom outer corners of the housing to a cooling air plenum inside the top of the housing. Inside the cooling air plenum and the cooling air ducts are a room air plenum and room air circulating space for the circulation of room air to be heated. This provides a compact construction with adequate wall cooling without the need for additional thermal insulation. The top of the unit is oriented at an angle less than 45.degree., preferably 23.2.degree. to horizontal so that the exhaust and vent pipes can be arranged in a top vent or a back vent arrangement without the pipes projecting beyond the back of the fireplace unit in the top vent arrangement.

Abstract: A cartoner having a main drive and elements such as transport lugs, product bucket elements that are adjustable to accommodate different sizes of cartons. The disclosure is directed to automatic means for varying the positions of those elements automatically using the power of the main drive to accomplish the adjustment.