Selkirk DSP7IWT Insulated Wall Thimble, 7" Wire Terminal Ends Recommended use on the following

Recommended use on the following materials: mild steel

To remove waste and grow beneficial bacteria for a healthy and clear pond

Wall Thickness: 3/32"

Contributes to an ultra-smooth final finish

Selkirk DSP7IWT Insulated Wall Thimble, 7" Wire Terminal Ends Recommended use on the followingHighlights: Size: 7" Installs quickly and eliminates need for using individual firestops Round shielding acts as a radiation shield and provides the required 2" air space clearance to combustibles The 2 sections telescope to accommodate 6" to 11" wall thickness The hole opening in the wall for No. 206463 is 8. 25"; for No. 207463 9. 25"; and No. 208463 10. 25"