Metalbest 4DT-WT Direct-Temp 4" x 6-5/8" Direct Vent Wall Thimble

- Item #: BCI1070160
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4" x 6-5/8" Direct Vent Wall Thimble from Direct-Temp

This two-piece wall thimble easily slides together for installation on wall thicknesses of 4" to 7". This serves a dual purpose as both a heat shield and firestop.

Direct-Temp system features stainless steel inner and heavy duty galvanized steel outer walls. Heavy duty centering brackets keep inner pipe centered and chamfered edges allow for easy slide-together assembly. The free-floating inner liner allows the pipe to expand and contract under high temperature, without creating gaps or stress points. The LockTab(r) is a unique design that allows for 360° rotation while securely locking the sections of pipe together with just a push of the tab.


  • Siliconozed fiberglass seal
  • LockTab security
  • Pipe rotates easily to align system components
  • No sealant required
  • 13" x 13" Base
  • 3.7" to 7" adjustable depth
  • Diameter: 6.75" inner and 14" outer
  • High efficiency performance
Connection Specifications:
  • Joint/Connection Overlap: 1-5/8"
  • Joint/Connection Type: Twist-Lock standard on all diameters
Material Specifications:
  • Outer Wall: Heavy duty galvanized steel
  • Inner Wall: 304 Stainless Steel

Additional Metalbest Links

Our SKU: Metalbest 4DT-WT

This product is listed under the following manufacturer number(s):

  • Metalbest 1604460B

*Denotes a finish or option that has been discontinued

Metalbest 4DT-WT Product Specifications

Specification Sheet
Installation Guide
Base Length 13
Base Width 13
Configuration Wall Thimble
Fuel Type Gas, Pellet
Inside Diameter 6.75
Manufacturer Warranty Lifetime Limited
Material Stainless Steel, Galvanized Steel
Maximum Depth 7
Maximum Length 7
Minimum Depth 3.7
Minimum Length 3.7
Outside Diameter 14
Pipe Class Direct Vent
Pipe Inside Diameter 4
Pipe Shape Round
UL Listed Yes
Vent Construction Double Wall
Vent Pipe Size 4 x 6-5/8

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Metalbest 4DT-WT Reviews

  • Can this be used as a side wall vent for a tankless indoor water heater?


    The Metalbest 4DT-WT is not intended for tankless water heater use.  You need a special gas vent, such as the Rinnai 224045.

  • Will the Metalbest 4DT-WT work as a side wall ventilation termination cap for tankless water heater?


    The Metalbest 4DT-WT is intended for use as a vent for a tankless water heater.

Buy the Metalbest 4DT-WT at Research Metalbest 4DT-WT online. Find Metalbest 4DT-WT features and specifications. Get the best deal by comparing the Metalbest 4DT-WT today.

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