TELECURB® telescopes to fit most manufacturers' HVAC units ranging in lengths from 65-7/8" to 96-7/8" and widths from 37-1/4" to 59-7/8", between 3 and 12 tons. TELECURB® expands in all three directions - length, width and height. TELECURB® is seismic/wind compliant.
Built-in, computer-designed Thermal Acoustical Sound (TAS) control system attenuates heat and noise, offering a more efficient, quieter, and user-friendly system. The TAS control system features perforated perimeter panels that in conjunction with the roofer supplied insulation, serves as the acoustical sound absorber for breakout noise inside the curb. In addition, this feature eliminates the need for factory supplied isolated curbs. The perforated panel does not act as a thermal barrier.
Made To Stock (MTS) - Is shipped fully-compacted to take up the least amount of warehouse space and ready for field expansion.
Made to Order (MTO) - Is factory expanded to the size necessary for your order. The unique telescoping Adjust-To-Fit™ technology of TELECURB® is designed to accommodate flat, pitched, or uneven roof applications.              
TELECURB® has been engineered to meet or exceed all International Building Code® (IBC) requirements for wind, structural and seismic load paths; including being shake table tested to the maximum spectral design acceleration (SDS), per AC156. It also meets the most stringent wind demands in the country.

Features & Benefits

  • National Roofing Contractor Association (NRCA) design compliant
  • Works well with all roofing membrane types
  • Available to ship compact (not expanded) or size specific, ready to install
  • Incorporates integral seal duct supports that are adjustable to HVAC size requirements
  • Adjustable on 3 axes
  • Reduces inventory
  • Shake table tested per AC156, ASCE7 and IBC®


  • HVAC rooftop equipment such as RTU's and fans




The engineers we employ hold the highest industry-recognized credentials in structural analysis, elastomer development and system dynamics.


We are the first ISO accredited PCA ISO-17065, third-party certification body for special seismic certification of non-structural building components and their mounting configurations by the ICC’s International Accreditation Service.

Test & Measurement

We are the only ISO 17025:2005 Accredited Seismic Simulation Test Laboratory with a triaxial shake table owned and operated by California licensed Structural engineers.

Testing Services Update
DCL now offers Nuclear Qualification and Testing services.

In partnership with Greenberry Industrial, we now offer testing services that meet the requirements of ASME NQA-1.

Call for more information.