Superior 45" Black Reflective Porcelain Liner Kit for DRT4045 and DRT4245 Gas Fireplaces empire-comfort-systems They have a 1 3/8

They have a 1 3/8 ” lip around the top

2 Installation Collars

That same highly reflective surface is what makes this liner so durable

60 compliant

Superior 45" Black Reflective Porcelain Liner Kit for DRT4045 and DRT4245 Gas Fireplaces empire-comfort-systems They have a 1 3/8What's Included 1 ea. Set of four (4) Hand Bend Brackets 1 ea. Left Firebox Panel 1 ea. Right Firebox Panel 1 ea. Rear Firebox Panel 3 ea. Insulation strips (porcelain panels only) 1 ea. Instruction Sheet Features Lines the interior of your unit Adds a reflective appearance to your fireplace Hand bend brackets prevent movement of the ceramic fiber firebox panels. Other finishes available Specifications Model Number BPLK45 DVA Catalog Number F2915