A template would be nice. Still, they sound great. FYI, this hole is 4 1/2" in diameter. You may need to upgrade to 4 9/16. You will also need 4 Phillips #8 stainless steel screws to attach the speaker. For the price, these speakers are better than expected.I installed them on the outside of my camper van.They sound great.
π£ Garmin Striker Plus 4 Review: Dual-Beam Transducer Features (010-01870-00)
10 Review
Deeper PRO Smart Sonar - Portable WiFi Fish Finder for Kayaks, Boats, and Ice Fishing on Shore
120 Review
Garmin GPSMAP Navigator Chartplotter 010 00864 01
11 Review
π€ Prospec Electronics JBL-PRV175: AM/FM/Bluetooth/USB Marine Stereo β 4x45 Watts of High-Quality Sound
10 Review
π§ FARO Aviation Headset Converter: Low to High Impedance Adapter for General Aviation (GA) and Military Headsets
9 Review
βοΈ Enhancing Aviation Safety: ASA-OVC View Limiting Device for Clearer Vision in Overcast Conditions
9 Review
πΊοΈ CARRVAS GPS Navigation System for Car, 2021 MAP 7inch Truck GPS Navigation, Spoken Turn-by-Turn Directions, Speed Warning, USA, Canada, Mexico, Lifetime Maps Update
9 Review
π MANN-FILTER W 811/80: The Optimal Oil Filter for Enhanced Engine Performance
11 Review