HOLIDAY ALERT

We will be closing at 12 PM EST on Friday, April 18th, in observance of Good Friday and Easter.
Any orders placed after this time will be processed on Monday, April 21st.
Have a happy Easter weekend!

UPS SHIPMENT ALERT

Due to the tragic UPS plane crash in Louisville, KY, some UPS shipments--including expedited packages--may be delayed. 
Our thoughts are with those affected by this incident. Thank you for your patience!

WE WANT TO HEAR FROM YOU!

We strive to make improvements that make it easier to serve your boating needs.
We’d like to know more about you and how we can do the best job possible for you.
Please take the time to complete this brief 3-5 minute survey to help us serve you better.

FREE Ground Shipping on Orders over $100!  Exceptions apply - see details.

Toggle Nav
  • Sign In
  • Create an Account
My Cart
Search
Menu
Account
Settings
Ductwork

Ductwork

Items 1-36 of 258

Set Descending Direction
View as Grid List
Page
  1. Webasto 5013432A 3 inch Insulated Flexible Air Duct, 32.8 feet
    3 inch Insulated Flexible Air Duct, 32.8 feet | Webasto 5013432A
    WEBASTO-5013432A
    Qty In Stock: 1
    MSRP: $238.00 $222.04
    Add to Wishlist
  2. MPI 163-0586 5/8 in. PVC Hose 50 Ft
    5/8 inch PVC Hose, 50 foot | MPI 163-0586
    MPI-163-0586
    Qty In Stock: 11
    MSRP: $127.93 $114.59
    Add to Wishlist
  3. Webasto WBCL007465A 5 inch EasyDuct Insulated Flexible Air Duct
    5 inch EasyDuct Insulated Flexible Air Duct, 19.7 foot | Webasto WBCL007465A
    WEBASTO-WBCL007465A
    Qty In Stock: 2
    MSRP: $307.00 $218.05
    Add to Wishlist
  4. Y-Shape Air Dividers | MSI Y
    Y-Shape Air Dividers | MSI Y
    MSI-Y
    Choose option for pricing
    Add to Wishlist
  5. MSI T-Shape Air Dividers
    T-Shape Air Dividers | MSI T
    MSI-T
    Choose option for pricing
    Add to Wishlist
  6. Large Image
    5" x 4" x 4" Air Divider Adapter Y | MSI Marine AY544
    MSI-AY544
    Qty In Stock: 4
    MSRP: $76.00 $65.77
    Add to Wishlist
  7. Small Image
    8 inch x 4 inch Transition Box | MSI TB84
    MSI-TB84
    Qty In Stock: 1
    MSRP: $29.70 $28.61
    Add to Wishlist
  8. MSI Marine Systems HCID-6 Insulated Duct 6 Inch x 25 Ft.
    H&C 214 Insulated Duct 6 In X 25 Ft | MSI Marine Systems HCID-6
    MSI-HCID-6
    Qty In Stock: 10
    MSRP: $120.04 $74.54
    Add to Wishlist
  9. Webasto 2510606A 4 inch EasyDuct Insulated Flexible Air Duct, 19.7 feet
    4 inch EasyDuct Insulated Flexible Air Duct, 19.7 feet | Webasto 2510606A
    WEBASTO-2510606A
    Qty In Stock: 0
    MSRP: $261.00 $185.38
    Add to Wishlist
  10. MSI Marine HA3P Hose Adapt 3 inch Duct
    Hose Adapt 3 inch Duct | MSI Marine HA3P
    MSI-HA3P
    Qty In Stock: 16
    MSRP: $12.10 $12.10
    Add to Wishlist
  11. MSI Marine AT544 5" x 4" x 4" Air Divider Adapter T
    5" x 4" x 4" Air Divider Adapter T | MSI Marine AT544
    MSI-AT544
    Qty In Stock: 3
    MSRP: $76.00 $73.64
    Add to Wishlist
  12. Webasto 5013435A 6 inch Insulated Flexible Air Duct, 32.8 feet
    6 inch Insulated Flexible Air Duct, 32.8 feet | Webasto 5013435A
    WEBASTO-5013435A
    Qty In Stock: 0
    MSRP: $292.00 $272.40
    Add to Wishlist
  13. Small Image
    Hose T Air Divider | MSI HT444
    MSI-HT444
    Qty In Stock: 5
    MSRP: $76.00 $73.64
    Add to Wishlist
  14. Plenum Box Fits 5 In Ring Blank Sides
    Plenum Box Fits 5 In Ring Blank Sides
    MSI-PL5
    Qty In Stock: 0
    MSRP: $46.75 $45.80
    Add to Wishlist
  15. Plenum Box Fits 6 In Ring Blank Sides
    Plenum Box Fits 6 In Ring Blank Sides
    MSI-PL6
    Qty In Stock: 0
    MSRP: $50.60 $49.58
    Add to Wishlist
  16. Cherry Return Grill
    Cherry Return Grill
    MSI-RARC14 1/4X8 1/8
    Qty In Stock: 0
    MSRP: $91.59 $90.92
    Add to Wishlist
  17. Cherry Grill
    Cherry Grill
    MSI-RARC8 1/8 X 14 1/4
    Qty In Stock: 0
    MSRP: $91.59 $90.92
    Add to Wishlist
  18. 10X6 Mahogany Return Grill
    10X6 Mahogany Return Grill
    MSI-RARM10X6
    Qty In Stock: 0
    MSRP: $74.50 $65.36
    Add to Wishlist
  19. MAHOGANY RETURN GRILL 12 X 5
    MAHOGANY RETURN GRILL 12 X 5
    MSI-RARM12X5
    Qty In Stock: 0
    MSRP: $65.69 $65.12
    Add to Wishlist
  20. RETURN AIR GRILL 14 X 12 MAHOGANY
    RETURN AIR GRILL 14 X 12 MAHOGANY
    MSI-RARM1412RC
    Qty In Stock: 0
    MSRP: $98.99 $98.18
    Add to Wishlist
  21. MAHOGANY RETURN AIR GRILL W/FILTER
    MAHOGANY RETURN AIR GRILL W/FILTER
    MSI-RARM9X6
    Qty In Stock: 0
    MSRP: $64.09 $63.63
    Add to Wishlist
  22. EZ Return Grill
    EZ Return Grill
    MSI-RART10X10
    Qty In Stock: 0
    MSRP: $129.75 $129.75
    Add to Wishlist
  23. 18 inch x 16 inch Teak Air Return Grill | Marine Systems Inc. RART12X18
    18 inch x 16 inch Teak Air Return Grill | Marine Systems Inc. RART12X18
    MSI-RART12X18
    Qty In Stock: 0
    MSRP: $158.25 $158.25
    Add to Wishlist
  24. Customer Teak Return Air Grill | MSI Marine Systems RART12X20
    Customer Teak Return Air Grill | MSI Marine Systems RART12X20
    MSI-RART12X20
    Qty In Stock: 0
    MSRP: $167.25 $167.25
    Add to Wishlist
  25. EZ Return Grill
    EZ Return Grill
    MSI-RART12X7
    Qty In Stock: 0
    MSRP: $107.54 $106.70
    Add to Wishlist
  26. EZ Return Grill
    EZ Return Grill
    MSI-RART18.38X9
    Qty In Stock: 0
    MSRP: $151.04 $149.90
    Add to Wishlist
  27. Teak EZ Return Grill 18x16 -Special Orde
    Teak EZ Return Grill 18x16 -Special Orde
    MSI-RART18X16
    Qty In Stock: 0
    MSRP: $184.79 $183.35
    Add to Wishlist
  28. Transition Box 10X4 5 In Ring Back
    Transition Box 10X4 5 In Ring Back
    MSI-TB104-5B
    Qty In Stock: 0
    MSRP: $39.05 $38.27
    Add to Wishlist
  29. Transistion Box 10 in. x 5 in. w/ 4 in. Ring
    Transistion Box 10 in. x 5 in. w/ 4 in. Ring
    MSI-TB105-4E
    Qty In Stock: 0
    MSRP: $36.39 $36.07
    Add to Wishlist
  30. Transition Box 10X5 5 In Ring Back
    Transition Box 10X5 5 In Ring Back
    MSI-TB105-5B
    Qty In Stock: 0
    MSRP: $39.05 $38.27
    Add to Wishlist
  31. Transition Box 10X6 5 In Ring Back
    Transition Box 10X6 5 In Ring Back
    MSI-TB106-5B
    Qty In Stock: 0
    MSRP: $39.05 $38.27
    Add to Wishlist
  32. TRANSITION BOX 10X6 6 IN RINGSIDE
    TRANSITION BOX 10X6 6 IN RINGSIDE
    MSI-TB106-6S
    Qty In Stock: 0
    MSRP: $49.89 $49.50
    Add to Wishlist
  33. Transition Box 12 x 12
    Transition Box 12 x 12
    MSI-TB1212
    Qty In Stock: 0
    MSRP: $36.85 $36.84
    Add to Wishlist
  34. Transition Box 12X4 5 In Ring Side
    Transition Box 12X4 5 In Ring Side
    MSI-TB124-5S
    Qty In Stock: 0
    MSRP: $41.80 $40.96
    Add to Wishlist
  35. Transition Box 10 x 10
    Transition Box 10 x 10
    MSI-TB1010
    Qty In Stock: 0
    MSRP: $36.85 $36.84
    Add to Wishlist
  36. TRANSITION BOX 10 X 6 INCH RING BACK
    TRANSITION BOX 10 X 6 INCH RING BACK
    MSI-TB104-6B
    Qty In Stock: 0
    MSRP: $39.05 $39.04
    Add to Wishlist

Items 1-36 of 258

Set Descending Direction
View as Grid List
Page

Sorry, is not an active item in our system. However, we may still be able to help you. Please email us at support@marinepartssource.com or call us at (866)388-0390 for assistance. Please make sure to have the item number handy when you contact us.

My Wish List
Last Added Items
  1. Add to Cart
    Remove This Item
Go to Wish List
You have no items in your wish list.
© 2025 Marine Parts Source. All Rights Reserved.