It is specified for 10 to 100w solar panel, cannot they be used with larger solar panels as 400w. if no, why ? what would you suggest instead ?

this can support 400w panel but need evaluate the weight of panel. we advise use it for Max100-200w panel

What is thickness of bracket, long side length, short side length, and width of bracket?

I would have to get on my roof to measure, but the thickness is substantial an sturdy.. plenty of height to mount to you solar panel and elevate over the roof. I used them to mount panels on a metal roof of a dock and plenty of elevation to raise above the corrugation

will these work for a curved rv roof on a travel trailer?

Actually, these solar panel mounting brackets can support curved RV roof assembly . but need calculate the radians of RV roof and adjust the angel of your panels. These brackets can adjust the stroke position.

What is its slit width to ensure my existing bolt goes through?

L Solar mounting bracket slit width is 48mm L x 8mm W. Hope it can fit your existing bolt goes through.

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Solar Panel Brackets

Product ID: 70728411

Details

Brand
Smarkey
Color
Silver
Finish Type
Powder Coated
Item Weight
16 ounces
Material
Aluminum

⚡Supports 10W-100W panels

🚐Versatile for RV, boat & flat roofs

🛠️Lightweight high-quality aluminum

$71

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Description

🔋 Mount your power, own your freedom!

BUILT TO LAST - Durable powder-coated aluminum ensures long-term weather resistance and strength.
EFFORTLESS SOLAR SETUP - Quick, maintenance-free installation saves you time and hassle.
LIGHTWEIGHT YET STRONG - Aluminum construction offers robust support without adding bulk.
UNIVERSAL COMPATIBILITY - Works seamlessly with composite, metal roofs, and multiple rail systems.
PERFECT FOR MOBILE OFF GRID LIVING - Ideal for RVs, boats, and any flat surface—power your adventures with confidence.

The Smarkey Solar Panel Mounting L Bracket 4 Units is a lightweight, durable aluminum mounting solution designed for 10W to 100W solar panels. Compatible with various roof types and rail systems, it offers easy, maintenance-free installation ideal for RVs, boats, and off-grid setups, ensuring secure and reliable solar panel support.

Specifications

ASIN	B07CR9QS4V
Best Sellers Rank	#600,966 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3,104 in Solar & Wind Power Parts & Accessories
Brand	Smarkey
Brand Name	Smarkey
Color	Silver
Customer Reviews	4.5 out of 5 stars 61 Reviews
Finish Type	Powder Coated
Finish Types	Powder Coated
Item Depth	1 inches
Item Weight	16 ounces
Manufacturer	Smarkey
Material	Aluminum
Material Type	Aluminum
Model Number	e4555375-d2da-4ea7-8c08-e0ce6b76d378
Mounting Type	Roof Mount
UPC	734010072985
Unit Count	4 Count

Reviews

J**Z

Really strong

I installed these brackets on top of my RV, and they are up and not going anywhere. Really happy!!

24.10.2024

D**.

Strong, Reliable Mounts for Solar Panels

These are heavy‑duty mounts that work perfectly for solar panels. They’re very strong, well‑built, and easy to use. Installation was simple, and they feel solid and secure once installed. Great quality overall.

22.02.2026

C**E

Eased my Airstream Install!

I used these to install two 200 W solar panels on the roof of my Airstream trailer. I used standard mounting brackets near the center of the panels, and these tall brackets at the ends (since the roof is curved). Materials are excellent and brackets are great quality!

27.07.2022

C**D

Unusual solution

Most solar panel mounting hardware clamps the frame down to the channel. We wanted to bolt the panels for a boat installation for more positive attachment because of the movement and wind. This hardware is perfect for that and for corrosion protection.

31.07.2022

C**T

Quality solar panel mounts

These are high quality aluminum solar panel mounting brackets. They come in a nice cardboard box, not all jumbled together in a baggie. The brackets have a rubber layer on the bottom as do the long lag bolts. This helps keep water out once they're screwed down. They worked perfectly to mount my Richsolar panel to a shingle roof. Would buy again.

21.07.2019

A**R

Like it. Expensive

26.05.2021

D**G

Excellent

perfect for mounting panels on a metal roof

2.03.2020

S**E

Aluminum

Works great

24.02.2019

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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$71

Duties & taxes included

In stock

Sold byAmazon BermudaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Bermuda.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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