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- Read About Safety and the Use of UV-C Germicidal Light on -

Ideal Horizons 42005 Equivalent Replacement UV Lamp

Part Number:
Lamp Category:
Varied Ship Date - Contact Us In Stock


Watts: 22 Watts
Length: 450 mm
Base: B16
Base Description: 4 Pin Single Ended (B16)
Qtz. OD: 15 mm
Wiring: Preheat
Output: Standard
Category: Preheat
Type: L
Wires: 2
Description: GPH450T5L/4
Note: Color of Lamp Base has no bearing on operation or use, and should not be considered when determining lamp needed.

This lamp is an equivalent replacement lamp for the following:

Brand Model
American Water Serivce PT8
Aqua Treatment Services ATS4-450, DWS-8V, EV-8E, SE-8V, SL-5, SL-8, SL-8V, GDS-8, PFC-8
Excelight Technologies, Inc. EL411L
Glasco L-062418
Ideal Horizons 42005, LMP42005, ME38K-4, ME38K-6, SVEH-7
Master Water Conditioning Corporation HIMSV-7, HIMSV-10
Neptune Tri-8, WTA4-450
Pristine Water Treatment RWT8
PurTest PT8
Siemens / Sunlight LP4260
UV Superstore GL450/4
Waterite Technologies, Inc. EL411L
Water Master G-71017L/4P
Water Soft Inc. UV07
Water Treatment & Accessories 05-0294-1, 05-0294-R, Tri-8, WTA4-450
Wedeco 42005, ME38K-4, ME38K-6, SVEH-7

Disclaimer: This is an Atlantic Ultraviolet Corporation® STER-L-RAY® brand lamp. It can be used as an equivalent replacement lamp for other brands.

Shipping Info

    Items marked "Ready to Ship - In Stock" are ready to ship and will do so promptly. Items marked "Varied Ship Date - Contact Us" are in production, and the ship date varies. Please place order & contact us for ship date.

ArmorLite™ Safety Shield is available for use with most STER-L-RAY ® Germicidal Ultraviolet Lamps. Contact our Ultraviolet Application Specialists to discuss the advantages of using germicidal lamps protected by the ArmorLite™ Safety Shield in your installation.

Our STER-L-RAY ® brand of Germicidal Ultraviolet Lamps can be used as equivalent replacement lamps for over 250 equipment brands and 5,000 models of ultraviolet equipment besides Atlantic Ultraviolet’s Air and Water Purifiers.

Can’t find lamp you are looking for? Each of our UV Application Specialists has access to an extensive cross referencing interface. Call us directly at 1-631-273-0500, Monday through Friday, 7am–6pm EST, email us at


Part Category:
Base Category (Pins per End):
4 Pin Base
Cross Reference Brands A:
American Water Service PT8, Aqua Treatment Service ATS EV8E, Aqua Treatment Service EV8E, ATS EV8E
Cross Reference Brands G to O:
Ideal Horizons 42005, Ideal Horizons SVEH-7, Lancaster Pump 10-6, Lancaster Pump 7-LUV-10ES, Master Water HIMSV-10, Master Water HIMSV-7
Cross Reference Brands P to S:
Purtest PT8, Siemens LP4260, Sunlight LP4260
Cross Reference Brands T to Z:
Wedeco SVEH-7, WTA 05-0294-1, WTA 05-0294-R, WTA 4-450, WTA Triton 8
Lamp Length:
12 - 24 in. (306 - 610mm)
Ozone Producing:
Part Type Equipment Brand Model / Part #
Lamp American Water Service PT8
Lamp Aqua Treatment Services, Inc. ATS4-450
Lamp Aqua Treatment Services, Inc. DWS-8V
Lamp Aqua Treatment Services, Inc. EV-8E
Lamp Aqua Treatment Services, Inc. GDS-8
Lamp Aqua Treatment Services, Inc. PFC-8
Lamp Aqua Treatment Services, Inc. SE-8V
Lamp Aqua Treatment Services, Inc. SL-5
Lamp Aqua Treatment Services, Inc. SL-8
Lamp Aqua Treatment Services, Inc. SL-8V
Lamp ATS ATS4-450
Lamp ATS EV-8E
Lamp ATS GDS-8
Lamp ATS PFC-8
Lamp ATS SE-8V
Lamp ATS SL-5
Lamp ATS SL-8
Lamp ATS SL-8V
Lamp Excelight Technologies, Inc. EL411L
Lamp Glasco Ultraviolet L-062481
Lamp Ideal Horizons 42005
Lamp Ideal Horizons LMP42005
Lamp Ideal Horizons ME38K-4
Lamp Ideal Horizons ME38K-6
Lamp Ideal Horizons SVEH-7
Lamp Master Water Conditioning Corporation HIMSV-10
Lamp Master Water Conditioning Corporation HIMSV-7
Lamp Master Water Conditioning Corporation MWC-10/4
Lamp Master Water Conditioning Corporation MWC-E10/4
Lamp Neptune Tri-8
Lamp Neptune WTA4-450
Lamp Pristine Water Treatment RWT8
Lamp PurTest P8-4-450
Lamp PurTest PT-8
Lamp Siemens LP4260
Lamp Ster-L-Ray 05-0010-R
Lamp Sunlight LP4260
Lamp UV Doctor 1118
Lamp UV Doctor UVDRX-1118
Lamp UV Superstore, Inc. GL450/4
Lamp Waterite Technologies, Inc. EL411L
Lamp Water Master WG-71017L/4P
Lamp Water Soft Inc UV07
Lamp Water Treatment & Accessories 05-0294-1
Lamp Water Treatment & Accessories 05-0294-R
Lamp Water Treatment & Accessories Tri-8
Lamp Water Treatment & Accessories WTA4-450
Lamp Wedeco UV Technologies, Inc. 42005
Lamp Wedeco UV Technologies, Inc. ME38K-4
Lamp Wedeco UV Technologies, Inc. ME38K-6
Lamp Wedeco UV Technologies, Inc. SVEH-7
Lamp WTA 05-0294-1
Lamp WTA 05-0294-R