Xpelair VX100T-SP (code: 92931AW) is a 4-inch (100mm) single-speed axial extractor fan designed for bathrooms, shower rooms, and WCs. It features an integrated overrun timer, which distinguishes it from the standard SP model. 
Key Features
Adjustable Overrun Timer: Allows the fan to continue running for a set period after the external switch (typically the light switch) is turned off. The timer is adjustable between 30 seconds and 30 minutes.
Short Spigot (SP): Features a shallow spigot depth (approx. 32mm), specifically designed for installation in shallow wall or ceiling cavities where space is limited.
Performance: Delivers an extraction rate of 76 m³/hr (21 liters per second) while consuming only 12 Watts of power.
Quiet Operation: Operates at a noise level of 41 dB(A) measured at 3 meters.
Safety & Compliance: Rated IPX4 for splash resistance, making it suitable for use in Bathroom Zones 1 and 2. It is fully compliant with Building Regulations Part F. 
Technical Specifications
Mounting: Wall, ceiling, or window.
Motor: Lubricated-for-life motor with thermal cut-out protection.
Dimensions: Approximately 164mm (H) x 159mm (W) x 89mm (D).
Wiring: Requires a three-core connection (Permanent Live, Switched Live, and Neutral) for the timer functionality to operate correctly. 
Image of Xpelair VX100T-SP
The unit features a modern, gloss-white square fascia with a circular central grille. It is identical in outward appearance to the VX100-SP but contains the internal timer control pot for adjustment during installation.