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PL-CSS-BK — Ceiling Support Square

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design. The System Design and Installation Guide is an additional resource.

PL-CSS-BK — Ceiling Support Square


Available in a black finish, the Ceiling Support Square is designed for flat ceiling chimney installations. All sizes fit between regular 16" O.C. ceiling joists. The decorative flange eliminates the need for additional trim face plate. Use with single-wall adapter. (For open-beam ceiling installations, use Roof Support or Adjustable Roof Support Assembly.) AV_pg10 AV PL-CSS-BK Ceiling Support Square prod dim

Available sizes (inches)

Part No.SizeABC
6PL-CSS-BK6"3"2"14 1/4" sq.
8PL-CSS-BK8"3"2"14 1/4" sq.