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Roof Curbs

Straight-sided Curbs

  • Constructed of 18 ga. Galvanized Steel with continuous welded seams and integral base plate.
  • Lined with 1 ½” fiberglass insulation.
  • Wood nailer typical with flat curb, gasket on pitched curb.
  • Damper tray and other options available.
  • SF Style available in flat, single pitch or peak mount.

  • Flat SF Submittals * C-4, C-5, C-9, C-10
  • Single-Pitched SF Submittal * C-12
  • Double Pitched SF Submittal * C-13
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Canted Curb

  • Features 18 ga. Galvanized steel with continuous welded seams and integral base plate for watertight construction and extra strength.
  • Includes 1-1/2" fiberglass sound attenuating thermal insulation
  • Damper tray optional
  • Available in custom sizes with many options

  • Type RF * Canted Style * Submittal C-1 and C-7
  • Type RFC * Raised Cant * Submittal C-3 and C-8
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Equipment Rails

  • Equipment Support Rails offered in any height and length
  • Standard width of 3 ½” with widths up to 12” available
  • Features continuous welded seams
  • 18 ga. steel support shell, base plate and counter flashing cap
  • Internally reinforced on 12 to 24” centers as required
  • Standard wood nailer of 2x4” lumber secured to top ledge

  • Type EQSF – Straight Sided Equipment Rail
  • Type EQRF – Canted Equipment Rail
  • Type EQRFRC – Raised Cant Equipment Rail
  • All styles – Submittal C-21
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Curb Adapters

  • Standard curb adapters constructed of 18 ga. Galvanized steel
  • Continuous welded seams and ¼” polystyrene gasket top perimeter
  • Available in custom sizes
  • Options include Damper Shelf and other materials
  • Combo adapter features 2 hole adapter for kitchen systems allowing exhaust and supply fans to share common curb and roof penetration
  • Type CAR Reducer Adapter, Submittal C-22
  • Type CAE Enlarger Adapter, Submittal C-23
  • Type CAH Hinged adapter, Submittal C-24
  • Type CACC Combination Adapter, Submittal C-25
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Burglar Bar Curbs

  • Constructed of 18 ga. Galvanized steel, fully welded
  • Lined with 1 ½” figerglass insulation and furnished with wood nailer
  • Features ½” security bars on 8” centers welded into curb base
  • Security bar options include ¾” bar with other spacing
  • Framed burlgar bar sets for existing curbs also available

  • RFBB Canted flat RF style C-2
  • SFBB Straight sided SF with nailer C-6
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Curb Extensions

  • Constructed of 18 ga. Galvanized steel with continuous welded seams
  • ¼” polystyrene gasket top ledge and 1 ½” insulation
  • Built-in back draft damper shelf and removable access panel
  • Vented Extension features 4” x 1/2” louver vents 4 sides (no insulation)

  • Curb Extension , Type EC * Submittal C-16
  • Vented Curb Extension, Type ECV * Submittal C-17
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RTU Curbs

  • Heavy gauge design to match multiple roof top unit models
  • Curb size determined by RTU manufacturer’s model and supplied curb layout
  • Curbs can be supplied knockdown any size or fully welded up to 84”
  • Constructed to match any roof type, standard or metal building style
  • Includes return/supply air and insulated panels as specified by supplied curb layout
  • Isolation rails can be included as option
  • Seismic not available
  • RTU Curb TYPE RTU, Submittal C-28
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Pipe Curbs

  • Several styles of pipe curbs available.
  • Type DPC curb with cap and pipe flashing boots for pipes up to 8”.
  • Type PCC curb with cap and welded collar for larger pipes (counter flashing by others).
  • Type DPB “doghouse” style pipe box.
  • Custom sizes and heights, any curb style provided.
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Sound Curbs

  • Sound Attenuating Curbs in several curb styles
  • Contains a streamline modular core of special acoustical fiberglass sound absorbing cells in a galvanized steel frame that reduces transmitted noise by approximately 40% and reduces total air flow by only 3 to 4%.
  • Minimum 16” high, with optional damper box available.

  • Straight Sided Sound Curb, Model SFSC *Submittal C-20
  • Canted Sound Curb, Model RFSC * Submittal C-18
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Restaurant Curbs

  • Features 18” high galvanized steel fully welded curb construction.
  • Furnished with ¼” gasket top ledge
  • Available in canted or straight sided style
  • Optional 4” x ½” vent louvers – 1 to 4 sides
  • No insulation furnished with vented curb option typically
  • Available in flat or pitched, custom sizes, with options available

  • Type SFR * Self Flashing or Straight Sided - Submittal C-15
  • Type RFR * Canted Restaurant Style – Submittal C-14
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