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Danback® Flexible Wood Backing

REDUCE STEEL STUD BACKING INSTALLATION TIME BY UP TO 90%

Danback® Flexible Wood Backing System, featuring Dricon® or FlamePRO® fire-retardant treated wood (FRT), has made wood backing installation easy and economical-eliminating cutting, notching, ripping and routing.

Danback provides superior connection shear and pullout strength to support and meet even some of the heaviest loading conditions.  Simply snap, flex and screw Danback into place.  The patented hinge design actually flexes around the stud and snaps into place for a perfect fit-every time.

  • Provides extra screw pullout strength for heavy-duty backing applications
  • Available in 48” sections, for either 16“ or 24” on-center framing
  • Meets all specifications for commercial and residential applications

Perfect backing system for:

  • Handrails
  • Baseboards
  • Door Jams and Wood Trim
  • Cabinets and Vanities
  • Ceiling and Crown Moldings

FlamePro® fire retardant lumber and plywood meets the requirements for FRTW listed in the International Code Council Acceptance Criteria ICC AC66 conforming with the International Residential and the International Building Codes (IRC & IBC). In Evaluation Report ESR-1626, ICC Evaluation Service found that Dricon® fire retardant treated wood complies with requirements for fire retardant treated wood described in the International Building Code®.

Danback flexible wood backing is available with FSC®-certified lumber and may contribute LEED® points to your project.

U.S. Patent No. 6,705,056 of Daniel W. Tollenaar
Danback® is a trademark of Daniel W. Tollenaar.
Dricon® is a registered trademark of Arch Wood Protection, Inc.
FlamePRO® is a registered trademark of Koppers Performance Chemicals, Inc.

Product Data & Ordering Information:

Product code Width Length Spacing Pcs./Skid
D16F* 5-1/8" 48" 16" o.c. 250
D24F* 5-1/8" 48" 24" o.c. 250
D16C** 5-1/8" 48" 16" o.c. 250
D24C** 5-1/8" 48" 24" o.c. 250

* = fire-treated plywood.
** = FSC-certified lumber available on request, which can contribute to LEED® points on your project. Contact ClarkDietrich LEED professionals at 888-437-3244 for more information. FSC chain-of-custody # BV-COC-008121

Trimables available for off-module spacing in small bucket or bulk quantities.

Material:  3/4" CDX Doug Fir Dricon® or FlamePRO® fire-retardant treated wood
Dimensions:  5-1/8" x 48" (130mm x 1219mm)
Packaging:  (250) pieces per skid
Product weight:  5.114 lbs. / piece

Load Tables

INSTALLATION CONDITION NOMINAL (LBS)
Shear / 0" Offet 2440
Shear / 1" Offset 825
Shear / 3" Offset 310
Tension 635

Notes:

1. Listed load values are nominal test load values, appropriate safety factors/resistance factors should be applied by the designer for calculating loads for intended use.
2. Shear / Offset (moment-rotation) Load refers to load directed in the plane of the wall.
3. Tension Load refers to load directed perpendicular to wall or plywood surface.
4. Tabulated loads include the contribution of 5/8" gypsum board.
5. Test loads were applied to the gypsum board and backing system through a 1/2" thick, 2-3/4" diameter steel plate secured with (4) #12 hex head screws.
6. Loads were applied directly through the steel plate or to a steel rod that cantilevered from the plate.
7. Typical failure mode in backing testing was the gypsum board failure.
8. 24-in o.c. stud spacing test results were similar/identical to 16-in o.c. test results.
9. Listed nominal capacities are based on using 33mil (20ga) non-structural framing members/studs.
10. Anchor to the stud flange using (3) #8 wafer head/pan head screws.

INSTALLATION:

  • Snap starter edge into the open side of the stud flange.
  • Hint: Start with the first full bay. Use Danback Trimables for off-module bays.
  • Flex Danback flexible wood backing around stud flange using the flexible connector plate.
  • Repeat the process.
  • Overlap connector plates when using in long backing runs.
  • Secure each plate to the stud flange using (3) #8 wafer head/pan head screws. Place one screw at the center and one screw 1/2" from top and bottom of the plate edge.

DanBack Catalog Pages and Installation Guide

Documents

Code Approvals & Performance Standards

  • ASTM A653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
  • ASTM A1003 Standard Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing Members
  • SDS For ASTM A1003 Steel Framing Products For Interior Framing, Exterior Framing and Clips/Accessories

FLAMEPRO® FIRE RETARDANT COMPLIES WITH OR HAS BEEN GRANTED THE FOLLOWING:

  • UL GREENGUARD Gold Certification – UL 2818
  • ICC ESR-4244
  • UL Classified with an FR-S Rating for flame spread and smoke development values of 25 or less
  • AWPA E12, AWPA M4, AWPA P50, AWPA T1 standard
  • Cal Fire Certified
  • American Institute of Architects Approved
  • ASTM 2768
  • ASTM D3201, D5516, D5664,  E84, E119, 2768, D6305, D6841
  • AWPA T1
  • AWPA UC-1
  • Class A FRT wood
  • UL Recognized Component
  • NFPA 703, 101 Life Safety Code
  • City of Los Angeles Building Code
  • City of Los Angeles Residential Code
  • National Building Code of Canada
  • One & two hour tested wall assemblies
  • 50-year warranty

(All are subject to revision, re-examination)

DRICON® FIRE RETARDANT OR DRICON® FRT WOOD COMPLIES WITH OR HAS BEEN GRANTED THE FOLLOWING:

  • AWPA T1 Section 8.8
  • AWPA P49 (FR-1), P25 (SBX)
  • AWPA U1 (UC1, UC2, UCFA) and former C9, C20, C27, C31
  • Flamespread and Smoke Development Rating of 25 or Less
  • Class A FRT wood
  • UL Recognized Component - UL 723
  • NFPA 703, 101 Life Safety Code
  • ICC-ES ESR-1626
  • EPA registration (62190-9)
  • NYC MEA 199-81-M, NYC MEA 200-81-M
  • Factory Mutual Class 1 Roof Deck
  • City of Los Angeles (RR 25122)
  • FHA Minimum Property Standard #2600
  • HUD Materials Release (1261)
  • ASTM D 5516, D5664, E84
  • Mil Spec. L-19140E
  • National Building Code of Canada
  • Truss warranty program with Structural Building Components Association
  • NFPA 255
  • Wisconsin Material Approval 960073-W

(All are subject to revision, re-examination)

PRoduct submittal SHeets

Click the below Product Code to view Submittal/Tech Datasheet.

Product Code Description
D16F, D24F Danback Flexible Wood Backing
D16C, D24C (FSC) Danback Packing Plate (FSC Wood)

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