General Purpose Roof Drains with Adjustable Extension
General Purpose Roof Drains with Adjustable ExtensionGeneral Purpose Roof Drains with Adjustable Extension

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General Purpose Roof Drains with Adjustable Extension

Figure Number:  1025
Product Function:
Used in flat roofs of any construction. The adjustable extension sleeve permits adjustment from a minimum of 1 1/4"(32) to a maximum of 4 "(100) easily accommodating up to 2 3/4"(70) of varying insulation thicknesses. The positive threading allows smooth perimeter movement and circumferential support of the top at any adjusted elevation. Large low profile dome provides sufficient free area for quick drainage of rainwater and protection against debris.

Regularly Furnished:
Duco Cast Iron Body with Side Outlet Elbow, Adjustable Extension Sleeve, Reversible Collar, Combined Flashing Clamp and Gravel Stop, with Polyethylene Dome.
Product Details
  • Product Type:  Roof Drain
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NameDescriptionFile Size
Specifications US Govt ComplianceItems complying with U.S. government specifications34 KBDownload
CSI Specifications for Roof DrainsCSI Specifications for Roof Drains230 KB
NameDescriptionFile Size
Parts Order Guide for Roof DrainsParts Order Guide for Roof Drains632 KBView

Optional Materials

  • Aluminum Dome -AD
  • Cast Iron Dome -CID
  • Galvanized Cast Iron -G - Body & Collar
  • Galvanized Cast Iron Dome -CIDG
  • Rough Bronze Dome -RBD


  • L-Shaped Underdeck Clamp -CL
  • Secondary Flashing Clamp -C2
  • Sump Receiver -R
  • Underdeck Clamp -C
  • Vandal Proof - Dome - U