SPEEDI-BOOT Vent Boot Hanger: 90° Boot Boot, 7 in Dia. 7 in H x 7 in W Collar Size

The SPEEDI-BOOT Vent Boot Hanger is a 90° boot vent boot made of steel. It features a 7-inch diameter, 7-inch height and width collar size, and is compatible with a 4-inch register height. The cap and collar are also…

SKU 3G-OTH-77686

Also listed as: SBS4127NB · SBS 4127 NB · SBS-4127-NB

Brand

SPEEDI-BOOT

Item

Vent Boot Hanger: 90° Boot Boot, 7 in Dia. 7 in H x 7 in W Collar Size

Local availability & support — Singapore

Local office: 20 Woodlands Link #09-05, Singapore 738733
Phone: +65 8878 8355
Delivery: Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment: Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to: Singapore

Technical Specifications

SPEEDI-BOOT

Manufacturer Part Number

SBS-4127 NB 

Type

7 in Dia. 7 in H x 7 in W Collar Size 

Material

Steel 

Cap/Collar Material

Steel 

Compatible Register Ht

4 in 

Technical Documents

No technical documents available for this product.

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SPEEDI-BOOT Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the SPEEDI-BOOT Vent Boot Hanger used for?

The SPEEDI-BOOT Vent Boot Hanger is used in HVAC ductwork to transition from round duct to a rectangular floor or wall register. Its 90° boot design directs airflow upward, and the steel construction provides durability in residential and light commercial ventilation systems.

What are the specifications of the SPEEDI-BOOT SBS-4127 NB?

The SPEEDI-BOOT SBS-4127 NB is a steel 90° vent boot with a 7-inch diameter, 7-inch height and width collar size, and a 4-inch compatible register height. Both cap and collar are steel. It is designed for HVAC applications requiring a round-to-rectangular transition.

Where to buy the SPEEDI-BOOT Vent Boot Hanger worldwide?

3G Electric supplies the SPEEDI-BOOT Vent Boot Hanger worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order the SBS-4127 NB or any SPEEDI-BOOT HVAC components.

How to install a SPEEDI-BOOT vent boot hanger?

Install the SPEEDI-BOOT vent boot hanger by securing the collar to the round duct with sheet metal screws or crimping. Align the boot opening with the register frame and fasten through the flange. Ensure a tight seal with mastic or foil tape to prevent air leaks.

Used in

Common applications for SPEEDI-BOOT

Industrial HVAC duct termination — SPEEDI-BOOT straight boots (e.g., SBS-8148 SB) for connecting 8-inch duct to registers in factory ventilation systems.

Warehouse air distribution — SPEEDI-BOOT end boots (e.g., SBS-6127 EB) for terminating duct runs in high-bay storage areas.

Commercial building supply air — SPEEDI-BOOT 90-degree boots (e.g., SBS-4126 NB) for directional changes in office or retail HVAC systems.

Manufacturing plant exhaust — SPEEDI-BOOT straight boots (e.g., SBS-4127 SB) for connecting 7-inch duct to exhaust registers in production zones.

Maintenance replacement — SPEEDI-BOOT end boots (e.g., SBS-4126 EB) for retrofitting existing ductwork with 6-inch diameter boots in older facilities.

Modular duct system integration — SPEEDI-BOOT 90-degree boots (e.g., SBS-4127 NB) for 7-inch duct transitions in prefabricated HVAC assemblies.

SPEEDI-BOOT Products

3G Electric supplies SPEEDI-BOOT vent boots. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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