✓ BS EN 124
✓ AASHTO H-20
✓ AASHTO H-25
✓ ISO 9001:2015
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Thermodrain Recess Manhole Covers (with Frame)

recess-manhole-cover-sizes

THERMODRAIN recess covers with frame are tested as per BS EN 124, IS1726 & AASHTO M306 standards for drainage and Utility services meeting all requirements of the code. THERMODRAIN Covers are better performing than Cast Iron, Ductile Iron and RCC recess covers.

Salient Features :

  • Double seal arrangement available
  • Closed bottom Keyholes
  • Permanent set is as per BSEN 124 for all sizes and load bearing
  • Self-pigmented
  • Non-brittle

Key Highlights :

  • Material : FRP/GRP/Composite material
  • Load Bearing capacity range : 2.5T (2.5 Tons) to E600 (60 Tons)
  • Shapes : Circular, square and rectangular shapes available
  • Lighter and easier to use
  • Superior to conventional materials
  • 65 mm height is provided for fixing of cement, blocks, tiles or other materials.
THERMODRAIN GRP/FRP/COMPOSITE RECESS MANHOLE COVERS WITH FRAME
FRAME OPENING SIZE
CIRCULAR RECTANGULAR SQUARE
500 mm (20")
600 mm (24")
690 mm (27")
762 mm (30")
900 mm (36")
1000 mm (40") 		600 mm x 450 mm
(24"x18")
900 mm x 450 mm
(36"x18")
900 mm x 600 mm
(36"x 24")
990 mm x 1220 mm
(40"x 49") 		300 mm x 300 mm
(12"x12")
450 mm x 450 mm
(18"x18")
600 mm x 600 mm
(24"x 24")
750 mm x 750 mm
(29"x 29")
900 mm x 900 mm
(36"x 36")
1000 mm x 1000 mm
(40"x 40")
1200 mm x 1200 mm
(48"x 48")

Frequently Asked Qeustions?

  • 1) What are THERMODRAIN Recess Manhole Covers used for?
    THERMODRAIN Recess Manhole Covers are designed to cover manholes and utility access points in drainage, sewage, and utility service networks. The recessed design allows paving materials like tiles, blocks, or concrete to be fixed within the frame, making the cover flush with the surrounding surface
  • 2) What material is used to make THERMODRAIN Recess Manhole Covers?
    These covers are made from FRP/GRP composite material — Fiber Reinforced Plastic/Glass Reinforced Plastic — a strong polymer composite that provides high strength relative to weight. This composite material is UV-stabilized, corrosion-resistant, and non-brittle, and it often comes with double seal arrangements and closed bottom keyholes.
  • 3) How durable are THERMODRAIN Recess Manhole Covers?
    THERMODRAIN covers are tested to international standards (like BS EN 124, IS 1726, and AASHTO M306) and come in load-bearing classes from 2.5 T to E600 (up to ~60 tons), making them suitable for pedestrian to heavy traffic zones. Their composite construction resists corrosion from water, sewage, chemicals, and UV exposure, resulting in long service life and minimal maintenance.
  • 4) What advantages do THERMODRAIN FRP covers have over traditional cast iron covers?
      THERMODRAIN FRP/GRP covers vs Cast Iron Covers:
    •   Lightweight & easy to handle vs heavy, requiring more manpower.
    •   Corrosion-resistant (no rust) vs metal is prone to corrosion over time.
    •   No scrap metal value → low theft risk vs cast iron has resale value and is often stolen.
    •   Self-pigmented (no painting needed) vs cast iron often needs regular repainting/coating.
    •   Better chemical resistance in harsh environments.
  • 5) Are THERMODRAIN covers easy to install and maintain?
    Yes. Because they are lightweight compared to metal or concrete covers, installation is easier, faster, and often requires fewer workers. Their weather and chemical resistance means low maintenance, and features like sealed keyholes help prevent foul odors and mosquito breeding.
recess-manhole-cover-sizes
recess-manhole-cover-sizes
recess-manhole-cover-sizes
recess-manhole-cover-sizes
recess-manhole-cover-sizes
recess-manhole-cover-sizes
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