Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.
ecobee 4 Pro

18" #508S Metal Starting Collar with Holes and Sealed Inside Flange for 1" or 1 1/2" Ductboard

Item: 508S18
MFR: 508S18


Sign in to see real-time inventory at the stores closest to you.
What’s the price?
Sign in for pricing.

Frequently Bought Together

Best Sellers

About This Product

Product Info


The #508S Starting Collar with Holes and Sealed Flange On Inside for 1" or 1 1/2" Ductboard is available in 12 sizes from 4" through 20".


Weight1.75 Pounds (lbs)
Length18 Inches (In)
Width18 Inches (In)
Height6 Inches (In)
Country of OriginUSA
Duct Diameter18"
Gauge26 GA
Package Quantity20
Prop 65No

Equipment Part List

‡Ductless Stock Up and Save offer valid thru May 31, 2019 at participating CE locations. Account must be active and in good standing condition to qualify for terms. Excludes special pricing and all accessories. Special quotes, OEM parts & job pricing excluded. Not valid on previous purchases. Offer cannot be combined with other offers or programs. Management reserves the right to modify or end this promotion at any time without notice. Orders must be placed and taken delivery by May 31, 2019.
Ductless Stock Up and Save