The Slimduct SIF Fixed Offset is designed to route linesets over 2″ wall offsets or corners, providing a clean, professional finish. Made from high-grade PVC, it delivers durable protection against weather, vandalism, pest damage, and other environmental factors—ensuring long-lasting performance in residential HVAC installations.
SKU
SIF-77
Categories Lineset / Cover, Residential, Residential Cover
Tag lineset cover fixed offset
Brand: Slimduct
SIF 2″ Fixed Offset






SKU
SIF-77
Categories Lineset / Cover, Residential, Residential Cover
Tag lineset cover fixed offset
Brand: Slimduct
SIF 2″ Fixed Offset
Routes linesets over 2″ wall offsets or corners. Made of high-grade PVC for durable, weather-resistant protection and a clean finish.
SKU
SIF-77
Categories Lineset / Cover, Residential, Residential Cover
Tag lineset cover fixed offset
Brand: Slimduct
SIF 2″ Fixed Offset






SKU
SIF-77
Categories Lineset / Cover, Residential, Residential Cover
Tag lineset cover fixed offset
Brand: Slimduct
SIF 2″ Fixed Offset
Routes linesets over 2″ wall offsets or corners. Made of high-grade PVC for durable, weather-resistant protection and a clean finish.
Routes linesets over 2″ wall offsets or corners. Made of high-grade PVC for durable, weather-resistant protection and a clean finish.
Code No. | Item No. | A | B | Pcs/Pkg |
---|---|---|---|---|
C 0417 | SIF-77 | 3-3/8″ | 2-3/4″ | 10 |
C 0418 | SIF-100 | 4-3/8″ | 3″ | 10 |
Q. What kind of caulking agent should I use?
A. Please use a silicone caulking with strong UV resistance.
Q. If sealing around joints is required, what kind of sealant should I use?
A. A UV-resistant silicone is recommended.
Q. To use as a reference when cutting the straight duct, what are the measurements of the product?
A. The center of the straight duct hole for the screw fitting (half-open hole) is 100mm or approximately 4″ pitch. Both ends are about 55mm or approximately 2″.
Q. What are the measurements of the product?
A. SLIMDUCT SD is available in three sizes: 3″, 4″, and 5-1/2″.
Q. Can SLIMDUCT SD be used indoors?
A. Yes. It will not negatively affect the aesthetic of the room and comes in several different colors and sizes to accommodate most any décor.
Q. What can I do to mount it on the wall?
A. You may use the specified option parts from the Residential Elevating System or the appropriate hardware based on the substrate.
Q. Can SLIMDUCT SD be used with the SLIMDUCT PD (separate series)?
A. Yes. Please use the PD-SD Coupler (PSDR) from the SLIMDUCT PD series.
Q. Can I use SLIMDUCT SD for other things besides a lineset?
A. Yes. It may be used for other kinds of pipes or items as long as the product is installed according to the installation manual.
Q. Do I need any specific tools to install the product?
A. No. Specialized tools are not required.
Q. What is the best way to make a straight cut?
A. While many tools can be used, we recommend the SLIMDUCT CUTTER (VD-2100), which is specially designed for SLIMDUCT SD. A standard hacksaw can also be used effectively.
Q. Can I install the product in combination with another company’s lineset cover?
A. No. SLIMDUCT SD is designed to be used only with other SD products from Inaba Denko. It is not designed or recommended for use with any other brand, and doing so voids the warranty.
Q. I installed the lineset cover outside and it deformed. What should I do?
A. If the product is exposed to excessive heat or if the internal piping is not properly supported—especially in horizontal installations—it may deform. Refer to the Instruction Manual for proper installation guidelines.
Q. What are the protrusions inside the SW and the SK?
A. These protrusions (pins) are designed to secure the duct cover in vertical applications. If not needed (e.g., in horizontal installations), they can be clipped off with pliers.
You May Also Be Interested In
-
RFS Adjustable Ell
Guides linesets along 0° to 20° horizontal corners with durable protection. Ideal for VRF/VRV systems needing a clean, professional finish.
-
RFW Walkway 45 Flat Ell
Connects linesets at 45° angles with durable, foot-traffic-rated protection. Installs easily and resists corrosion—ideal for VRF/VRV rooftop applications.
-
PDJT T-Branch
Protective cover for VRV/VRF branching couplers. Durable and weather-resistant. Fits seamlessly with Slimduct PD system.
-
PD Straight Duct
Durable cover for commercial rooftop linesets. Clean finish for HVAC or plumbing use. Compatible with Slimduct RD for seamless transitions.