Privacy & affiliate disclosure

Affiliate disclosure

Some links on this site are affiliate links. If you buy through one, we may earn a commission at no additional cost to you. Recommendations are based on specifications and application fit, not commission rates.

Privacy

This site does not require an account and does not ask for personal data. Standard server and analytics logs may record your IP address, browser type and pages visited for the purpose of understanding traffic. The calculators run entirely in your browser — the figures you enter are not transmitted or stored.

Cookies

Affiliate links may set cookies on the retailer's site to attribute a sale. You can block these in your browser without affecting the content you can read here.

Accuracy

Specifications, prices and product availability change. Figures here reflect the position at publication and are general guidance; always confirm against the manufacturer's documentation before buying or installing.