Roof Drain with 4.00" Gravel Stop and Adjustable Extension

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Roof Drain with 4.00" Gravel Stop and Adjustable Extension

Figure Number:  1031
Large Roof
Drain with Gravel Stop With Gravel Stop
And Adjustable Extension
Product Function:
Used on roof systems where the insulated membrane assembly method of waterproofing is provided, using built-up felt and asphalt. The adjustable extension sleeve permits adjustment from a min. of 1 1/4"(32) to max. of 4 "(100), easily accommodating 2 3/4"(70) of varying insulation thicknesses. The positive threading allows smooth perimeter movement and circumferential support of the top of any adjusted elevation. A 4"(100) high perforated stainless steel gravel guard is supplied to retain the crushed gravel used in flat roof construction.

Regularly Furnished:
Duco Cast Iron Body with Adjustable Extension Sleeve, 1/16"(2) Thick 4" (100) High Stainless Steel Perforated Gravel Guard with 3/8"(10) DIA Openings, Flashing Clamp and Polyethlene Dome.
Product Details
  • Product Type:  Roof Drain
Related Figure Numbers
  • 1031-R-C - With Sump Reciever Plate
  • 1039 - With Wide Flange Body
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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
  • Rough Bronze Dome -RBD


  • Expansion Joint (Specify Fig. 1710)
  • Higher Gravel Stop -HGS (Specify Height)
  • L-Shaped Underdeck Clamp -CL
  • L Speedi-Set® Service Weight - 02(50), 03(75), 04"(100) Sizes Only
  • LXH Speedi-Set® Extra Heavy.
  • Sump Receiver -R
  • Underdeck Clamp -C
  • Vandal Proof - Dome - U
  • T Threaded Outlet